Erase Failed! Error: Flash Download failed - "Cortex-M4" Flash Load finished at 23:05:14

[Hardik1306]

I have readytosky 35amp esc it has at32f415kb microcontroller I followed all steps as shown in youtube video for 3 times but getting the sma error
Build started: Project: Am32F415
*** Using Compiler 'V6.21', folder: 'C:\Keil_v5\ARM\ARMCLANG\Bin'
Build target 'AT32DEV_F415'
compiling firmwareversion.c...
compiling functions.c...
compiling at32f415_cmp.c...
compiling at32f415_crc.c...
compiling dshot.c...
compiling signal.c...
compiling sounds.c...
compiling at32f415_crm.c...
compiling at32f415_adc.c...
compiling at32f415_can.c...
compiling at32f415_debug.c...
compiling at32f415_dma.c...
compiling at32f415_exint.c...
compiling main.c...
compiling at32f415_gpio.c...
compiling at32f415_misc.c...
compiling at32f415_i2c.c...
compiling at32f415_pwc.c...
compiling at32f415_spi.c...
compiling at32f415_sdio.c...
compiling at32f415_ertc.c...
compiling at32f415_tmr.c...
compiling at32f415_usart.c...
compiling at32f415_wdt.c...
compiling ADC.c...
compiling at32f415_wwdt.c...
compiling comparator.c...
compiling at32f415_it.c...
compiling at32f415_flash.c...
compiling eeprom.c...
compiling IO.c...
compiling at32f415_usb.c...
compiling peripherals.c...
compiling phaseouts.c...
compiling system_at32f415.c...
compiling serial_telemetry.c...
linking...
Program Size: Code=24130 RO-data=458 RW-data=952 ZI-data=2712
FromELF: creating hex file...
".\Objects\AM32_AT32DEV_F415.axf" - 0 Error(s), 0 Warning(s).
Build Time Elapsed: 00:00:03
Load "C:\Users\hardi\Downloads\AM32-main\AM32-main\Keil_Projects\Objects\AM32_AT32DEV_F415.axf"
Erase Failed!
Error: Flash Download failed - "Cortex-M4"
Flash Load finished at 22:53:48
Load "C:\Users\hardi\Downloads\AM32-main\AM32-main\Keil_Projects\Objects\AM32_AT32DEV_F415.axf"
No Algorithm found for: 08001000H - 080072CFH
No Algorithm found for: 08007BE0H - 08007BFFH
Erase skipped!
Error: Flash Download failed - "Cortex-M4"
Flash Load finished at 22:54:26
Load "C:\Users\hardi\Downloads\AM32-main\AM32-main\Keil_Projects\Objects\AM32_AT32DEV_F415.axf"
No Algorithm found for: 08001000H - 080072CFH
No Algorithm found for: 08007BE0H - 08007BFFH
Erase skipped!
Error: Flash Download failed - "Cortex-M4"
Flash Load finished at 22:58:51
Load "C:\Users\hardi\Downloads\AM32-main\AM32-main\Keil_Projects\Objects\AM32_AT32DEV_F415.axf"
No Algorithm found for: 08001000H - 080072CFH
No Algorithm found for: 08007BE0H - 08007BFFH
Erase skipped!
Error: Flash Download failed - "Cortex-M4"
Flash Load finished at 23:03:30
Load "C:\Users\hardi\Downloads\AM32-main\AM32-main\Keil_Projects\Objects\AM32_AT32DEV_F415.axf"
Erase Failed!
Error: Flash Download failed - "Cortex-M4"
Flash Load finished at 23:03:59