C:\Users\sothiag\AppData\Local\Temp\.arduinoIDE-unsaved202316-12136-etjlid.995xe\msc_external_flash_sdcard\msc_external_flash_sdcard.ino:56:1: error: 'Adafruit_USBD_MSC' does not name a type; did you mean 'Adafruit_SPIFlash'?
 Adafruit_USBD_MSC usb_msc;
 ^~~~~~~~~~~~~~~~~
 Adafruit_SPIFlash
C:\Users\sothiag\AppData\Local\Temp\.arduinoIDE-unsaved202316-12136-etjlid.995xe\msc_external_flash_sdcard\msc_external_flash_sdcard.ino: In function 'void setup()':
C:\Users\sothiag\AppData\Local\Temp\.arduinoIDE-unsaved202316-12136-etjlid.995xe\msc_external_flash_sdcard\msc_external_flash_sdcard.ino:72:3: error: 'usb_msc' was not declared in this scope
   usb_msc.setMaxLun(2);
   ^~~~~~~
C:\Users\sothiag\AppData\Local\Temp\.arduinoIDE-unsaved202316-12136-etjlid.995xe\msc_external_flash_sdcard\msc_external_flash_sdcard.ino: In function 'bool init_sdcard()':
C:\Users\sothiag\AppData\Local\Temp\.arduinoIDE-unsaved202316-12136-etjlid.995xe\msc_external_flash_sdcard\msc_external_flash_sdcard.ino:131:3: error: 'usb_msc' was not declared in this scope
   usb_msc.setCapacity(1, block_count, 512);
   ^~~~~~~

exit status 1

Compilation error: 'Adafruit_USBD_MSC' does not name a type; did you mean 'Adafruit_SPIFlash'?