strtotime(): Passing null to parameter #1 ($datetime) of type string is deprecated

[flowdee]

🐞 bug report

Behavior:
strtotime(): Passing null to parameter #1 ($datetime) of type string is deprecated

Versions: (*)

• Freemius SDK Version: 2.6.1
• WordPress Version: 6.4.2
• PHP Version: 8.1

Plugin / Theme: (*)

• Freemius Theme ID: 14606

License: (*)

• Unlimited
• Lifetime
• Created manually, without payment

wp-content/themes/my-theme/freemius/includes/entities/class-fs-plugin-license.php:292
strtotime()
wp-content/themes/my-theme/freemius/includes/entities/class-fs-plugin-license.php:292
FS_Plugin_License->is_first_payment_pending()
wp-content/themes/my-theme/freemius/templates/account.php:197
fs_get_template()
wp-content/themes/my-theme/freemius/includes/class-freemius.php:23459
Freemius->_account_page_render()
wp-includes/class-wp-hook.php:324
do_action('appearance_page_newsdesk-account')
wp-admin/admin.php:259