Favicon not working.

[FluxxyBoi]

Issue with FAVICONS

Hello there! I want to use my favicon which is named server-icon.png . How do I do that?
I've added a section called Files in which I've added a list [only one] of favicon(s). Here is my config file of SLP:

# ServerListPlus v3.5.0 - https://git.io/slp
# More information is available in the wiki: https://git.io/slp-wiki

 # This is the section where you can customize your server status ping!
 # - Default is the section for the status used when the player name is unknown.
#    Personalized is used if the client has already joined the server once.
#    Use %player% as placeholder for the player's name.
# 
# Features:
#  - Description (MotD): A short status message for your server, max. 2 lines.
#  - Players:
#    - Hover: The player hover message that is displayed if you hover the player count.
#    - Slots: Custom player slot formatting, see http://git.io/slp-slots
#  - Favicon:
#    - Use multiple server icons or the player's head as favicon, see http://git.io/oMhJlg
#    - Possible favicon sources: Files, Folders, URLs, Heads, Helms, Encoded
# 
#  More features are explained in the Wiki: http://git.io/slp-config
# 
# Usage:
#  - Add multiple entries for random messages.
#  - You can use formatting codes (&c, &l etc) and hex RGB color codes (&#rrggbb).
#  - Save the file with valid UTF-8 encoding for special characters.
#  - Available placeholders:
#    - Player name: %player%
#    - Player count: %online%, %max%, %online@server% %online@world%
#    - Random online player name: %random_player%
#    - Ban reason: %ban_reason%
#    - Ban operator: %ban_operator%
#    - Ban experiation date: %ban_expiration_date%, %ban_expiration_datetime%
--- !Status
Default:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lPvP&7], [&a&lMinigames&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eJoin now for an &lAmazing &eExperience!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%We''re newly released!!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome to &lA Minecraft Server&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!
Personalized:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lLifesteal&7], [&a&lBedwars&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eWelcome to the server, &a&l%player%
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%Newly Released! Hello %player%!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome back, &l%player%&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!

# PlayerTracking: Enable/disable tracking of player names to their IP-Addresses.
#   - Persistence can be disabled with the toggle in the Storage section.
# StripRGBIfOutdated: Strip RGB color codes for outdated clients.
#   - With this enabled you can put an old color code (e.g. &c) before RGB codes/gradients
#     and they will be shown for outdated clients.
# Unknown: Placeholder replacement if the real value is unknown.
# Favicon: Options for the creation / downloading of favicons:
#  - RecursiveFolderSearch: Also search for favicons in sub directories.
#  - SkinSource: The URL to get the Minecraft Skins from. (%s -> player name)
#  - ResizeStrategy: The strategy used to resize too small or too big favicons.
#      NONE (keep them as is, will probably fail), SCALE (scale them to the correct size)
--- !Plugin
PlayerTracking:
  Enabled: true
  Storage: !JSONStorage
    Enabled: true
    SaveDelay: 5m
StripRGBIfOutdated: true
Unknown:
  PlayerName: player
  PlayerCount: ???
  Date: ???
  BanReason: some reason
  BanOperator: somebody
  BanExpirationDate: never
Favicon:
  Timeout: 10s
  RecursiveFolderSearch: false
  ResizeStrategy: SCALE
  Files:
  - server-icon.png

For some reason, The favicon doesn't show on minecraft. The favicon is in both, the main directory and plugins folder, I've tried in doing in one but that didn't work. Any help would be appriciated.

[FluxxyBoi]

Text got big due to it having # before it.. markdown.

[stephan-gh]

You need to add the Favicon: part within the !Status section. Don't add new lines below !Plugin. See e.g. the example in https://github.com/Minecrell/ServerListPlus/wiki/Examples (that one uses Favicon -> Heads instead of Files but the concept is the same)

[FluxxyBoi]

My config:

# More information is available in the wiki: https://git.io/slp-wiki

# This is the section where you can customize your server status ping!
#  - Default is the section for the status used when the player name is unknown.
#    Personalized is used if the client has already joined the server once.
#    Use %player% as placeholder for the player's name.
# 
# Features:
#  - Description (MotD): A short status message for your server, max. 2 lines.
#  - Players:
#    - Hover: The player hover message that is displayed if you hover the player count.
#    - Slots: Custom player slot formatting, see http://git.io/slp-slots
#  - Favicon:
#    - Use multiple server icons or the player's head as favicon, see http://git.io/oMhJlg
#    - Possible favicon sources: Files, Folders, URLs, Heads, Helms, Encoded
# 
#  More features are explained in the Wiki: http://git.io/slp-config
# 
# Usage:
#  - Add multiple entries for random messages.
#  - You can use formatting codes (&c, &l etc) and hex RGB color codes (&#rrggbb).
#  - Save the file with valid UTF-8 encoding for special characters.
#  - Available placeholders:
#    - Player name: %player%
#    - Player count: %online%, %max%, %online@server% %online@world%
#    - Random online player name: %random_player%
#    - Ban reason: %ban_reason%
#    - Ban operator: %ban_operator%
#    - Ban experiation date: %ban_expiration_date%, %ban_expiration_datetime%
--- !Status
Default:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lPvP&7], [&a&lMinigames&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eJoin now for an &lAmazing &eExperience!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%We''re newly released!!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome to &lA Minecraft Server&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!
  Favicon:
  	Files:
  	- server-icon.png
Personalized:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lLifesteal&7], [&a&lBedwars&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eWelcome to the server, &a&l%player%
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%Newly Released! Hello %player%!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome back, &l%player%&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!
   Favicon:
   	Files:
  	- server-icon.png

# PlayerTracking: Enable/disable tracking of player names to their IP-Addresses.
#   - Persistence can be disabled with the toggle in the Storage section.
# StripRGBIfOutdated: Strip RGB color codes for outdated clients.
#   - With this enabled you can put an old color code (e.g. &c) before RGB codes/gradients
#     and they will be shown for outdated clients.
# Unknown: Placeholder replacement if the real value is unknown.
# Favicon: Options for the creation / downloading of favicons:
#  - RecursiveFolderSearch: Also search for favicons in sub directories.
#  - SkinSource: The URL to get the Minecraft Skins from. (%s -> player name)
#  - ResizeStrategy: The strategy used to resize too small or too big favicons.
#      NONE (keep them as is, will probably fail), SCALE (scale them to the correct size)
--- !Plugin
PlayerTracking:
  Enabled: true
  Storage: !JSONStorage
    Enabled: true
    SaveDelay: 5m
StripRGBIfOutdated: true
Unknown:
  PlayerName: player
  PlayerCount: ???
  Date: ???
  BanReason: some reason
  BanOperator: somebody
  BanExpirationDate: never
Favicon:
  Timeout: 10s
  RecursiveFolderSearch: false
  ResizeStrategy: SCALE
  Files:
  - server-icon.png

Error:

net.minecrell.serverlistplus.core.lib.snakeyaml.scanner.ScannerException: while scanning for the next token
found character '\t(TAB)' that cannot start any token. (Do not use \t(TAB) for indentation)
 in 'reader', line 49, column 3:
        Files:
      ^

        at net.minecrell.serverlistplus.core.lib.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:445) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:238) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl$ParseBlockMappingValue.produce(ParserImpl.java:671) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:162) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:57) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:43) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:136) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:116) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeScalarNode(Composer.java:241) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeNode(Composer.java:205) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeKeyNode(Composer.java:359) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:344) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingNode(Composer.java:323) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeNode(Composer.java:209) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeValueNode(Composer.java:369) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:348) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingNode(Composer.java:323) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeNode(Composer.java:209) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.getNode(Composer.java:131) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:162) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.Yaml$1.next(Yaml.java:515) ~[?:?]
        at net.minecrell.serverlistplus.core.ConfigurationManager.reload(ConfigurationManager.java:91) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.reload(ServerListPlusCore.java:197) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:146) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:92) ~[?:?]
        at net.minecrell.serverlistplus.bungee.BungeePlugin.onEnable(BungeePlugin.java:93) ~[?:?]
        at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:316) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCord.start(BungeeCord.java:299) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:67) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
[15:10:30 ERROR] [ServerListPlus]: [Core] Unable to parse the configuration. Make sure the YAML syntax is correct!
net.minecrell.serverlistplus.core.lib.snakeyaml.scanner.ScannerException: while scanning for the next token
found character '\t(TAB)' that cannot start any token. (Do not use \t(TAB) for indentation)
 in 'reader', line 49, column 3:
        Files:
      ^

        at net.minecrell.serverlistplus.core.lib.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:445) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:238) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl$ParseBlockMappingValue.produce(ParserImpl.java:669) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:162) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:152) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.checkNode(Composer.java:105) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.constructor.BaseConstructor.checkData(BaseConstructor.java:149) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.Yaml$1.hasNext(Yaml.java:510) ~[?:?]
        at net.minecrell.serverlistplus.core.ConfigurationManager.reload(ConfigurationManager.java:88) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.reload(ServerListPlusCore.java:197) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:146) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:92) ~[?:?]
        at net.minecrell.serverlistplus.bungee.BungeePlugin.onEnable(BungeePlugin.java:93) ~[?:?]
        at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:316) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCord.start(BungeeCord.java:299) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:67) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
[15:10:30 INFO] [ServerListPlus]: Please fix the error before restarting the server!```

[stephan-gh]

Try to read the error message:

(Do not use \t(TAB) for indentation)

[FluxxyBoi]

I figured it out right when I was posting the reply, I fixed it but now I'm getting this:

 in 'reader', line 52, column 3:
      Description:
      ^
expected <block end>, but found '<block mapping start>'
 in 'reader', line 67, column 4:
       Favicon:
       ^

        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:656) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:162) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:57) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:43) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:136) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:116) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingNode(Composer.java:330) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeNode(Composer.java:209) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeValueNode(Composer.java:369) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:348) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingNode(Composer.java:323) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeNode(Composer.java:209) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeValueNode(Composer.java:369) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:348) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeMappingNode(Composer.java:323) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.composeNode(Composer.java:209) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.getNode(Composer.java:131) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:162) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.Yaml$1.next(Yaml.java:515) ~[?:?]
        at net.minecrell.serverlistplus.core.ConfigurationManager.reload(ConfigurationManager.java:91) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.reload(ServerListPlusCore.java:197) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:146) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:92) ~[?:?]
        at net.minecrell.serverlistplus.bungee.BungeePlugin.onEnable(BungeePlugin.java:93) ~[?:?]
        at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:316) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCord.start(BungeeCord.java:299) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:67) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
[15:17:16 ERROR] [ServerListPlus]: [Core] Unable to parse the configuration. Make sure the YAML syntax is correct!
net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserException: while parsing a block mapping
 in 'reader', line 32, column 1:
    Default:
    ^
expected <block end>, but found '<block mapping start>'
 in 'reader', line 67, column 4:
       Favicon:
       ^

        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:656) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:162) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:152) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.composer.Composer.checkNode(Composer.java:105) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.constructor.BaseConstructor.checkData(BaseConstructor.java:149) ~[?:?]
        at net.minecrell.serverlistplus.core.lib.snakeyaml.Yaml$1.hasNext(Yaml.java:510) ~[?:?]
        at net.minecrell.serverlistplus.core.ConfigurationManager.reload(ConfigurationManager.java:88) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.reload(ServerListPlusCore.java:197) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:146) ~[?:?]
        at net.minecrell.serverlistplus.core.ServerListPlusCore.<init>(ServerListPlusCore.java:92) ~[?:?]
        at net.minecrell.serverlistplus.bungee.BungeePlugin.onEnable(BungeePlugin.java:93) ~[?:?]
        at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:316) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCord.start(BungeeCord.java:299) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:67) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
        at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15) ~[server.jar:git:Waterfall-Bootstrap:1.20-R0.2-SNAPSHOT:320f9e1:554]
[15:17:16 INFO] [ServerListPlus]: Please fix the error before restarting the server!```

[stephan-gh]

You have some new syntax error now. You didn't post your configuration so it's hard to tell what exactly.

[FluxxyBoi]

I'll post it here:

# More information is available in the wiki: https://git.io/slp-wiki

# This is the section where you can customize your server status ping!
#  - Default is the section for the status used when the player name is unknown.
#    Personalized is used if the client has already joined the server once.
#    Use %player% as placeholder for the player's name.
# 
# Features:
#  - Description (MotD): A short status message for your server, max. 2 lines.
#  - Players:
#    - Hover: The player hover message that is displayed if you hover the player count.
#    - Slots: Custom player slot formatting, see http://git.io/slp-slots
#  - Favicon:
#    - Use multiple server icons or the player's head as favicon, see http://git.io/oMhJlg
#    - Possible favicon sources: Files, Folders, URLs, Heads, Helms, Encoded
# 
#  More features are explained in the Wiki: http://git.io/slp-config
# 
# Usage:
#  - Add multiple entries for random messages.
#  - You can use formatting codes (&c, &l etc) and hex RGB color codes (&#rrggbb).
#  - Save the file with valid UTF-8 encoding for special characters.
#  - Available placeholders:
#    - Player name: %player%
#    - Player count: %online%, %max%, %online@server% %online@world%
#    - Random online player name: %random_player%
#    - Ban reason: %ban_reason%
#    - Ban operator: %ban_operator%
#    - Ban experiation date: %ban_expiration_date%, %ban_expiration_datetime%
--- !Status
Default:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lPvP&7], [&a&lMinigames&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eJoin now for an &lAmazing &eExperience!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%We''re newly released!!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome to &lA Minecraft Server&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!
  Favicon:
    Files:
    - server-icon.png
Personalized:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lLifesteal&7], [&a&lBedwars&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eWelcome to the server, &a&l%player%
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%Newly Released! Hello %player%!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome back, &l%player%&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!
   Favicon:
    Files:
    - server-icon.png

# PlayerTracking: Enable/disable tracking of player names to their IP-Addresses.
#   - Persistence can be disabled with the toggle in the Storage section.
# StripRGBIfOutdated: Strip RGB color codes for outdated clients.
#   - With this enabled you can put an old color code (e.g. &c) before RGB codes/gradients
#     and they will be shown for outdated clients.
# Unknown: Placeholder replacement if the real value is unknown.
# Favicon: Options for the creation / downloading of favicons:
#  - RecursiveFolderSearch: Also search for favicons in sub directories.
#  - SkinSource: The URL to get the Minecraft Skins from. (%s -> player name)
#  - ResizeStrategy: The strategy used to resize too small or too big favicons.
#      NONE (keep them as is, will probably fail), SCALE (scale them to the correct size)
--- !Plugin
PlayerTracking:
  Enabled: true
  Storage: !JSONStorage
    Enabled: true
    SaveDelay: 5m
StripRGBIfOutdated: true
Unknown:
  PlayerName: player
  PlayerCount: ???
  Date: ???
  BanReason: some reason
  BanOperator: somebody
  BanExpirationDate: never
Favicon:
  Timeout: 10s
  RecursiveFolderSearch: false
  ResizeStrategy: SCALE
  Files:
  - server-icon.png

[stephan-gh]

If you read the error closely it tells you exactly where to look for the mistake:

 in 'reader', line 52, column 3:
      Description:
      ^
expected <block end>, but found '<block mapping start>'
 in 'reader', line 67, column 4:
       Favicon:
       ^

So you look around line 67 which is the Favicon: line inside:

Personalized:
  Description:
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &7Now with [&a&lLifesteal&7], [&a&lBedwars&7], and much more!
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &eWelcome to the server, &a&l%player%
  - |-
    &4&k--&c&k--&4&k--&c&k--&5&k--&d&k--&5&k--&d&k--&5&k--&6&lGemsMC&3&k--&1&k--&3&k--&1&k--&3&k--&a&k--&2&k--&a&k--&2&k--
    &e%gradient#ffbe00#f4511e%Newly Released! Hello %player%!%gradient%
  Players:
    Hover:
    - |-
      &aWelcome back, &l%player%&a!
      &aCurrently &e&l%online%/%max% &aplayers are playing on our server!
   Favicon:  # <----------- HERE
    Files:
    - server-icon.png

And if you look closely it looks a bit odd, compared to what you have below Default. Compare them closely:

Default:
  Favicon:
    Files:
    - server-icon.png
Personalized:
   Favicon:   # <-------- Broken line
    Files:
    - server-icon.png

Do you see it?

As a side note, there is no need to duplicate the Favicon part into both Default and Personalized if it's exactly the same. Only add lines to Personalized if you want to make it specific to %player% (e.g. an individual favicon for each player).