Stuck Installation when trying to flash😭

[MissingxLink]

C:\ADB>fastboot flash system a15.img
Sending sparse 'system' 1/15 (262112 KB) OKAY [ 9.916s]
Writing 'system' FAILED (remote: 'No such file or directory')
fastboot: error: Command failed

[MissingxLink]

Self Solved! So sometimes the .img wont flash on the current slot which was A and switched to B. Using the given commands I managed to flash b, but the command set active a didn't work. So ChatGPT helped and suggested I use fastboot --set-active=b which WORKED. Before that, Chat helped me get back on the fastboot screen from the recovery screen that says no command with the droid bot by holding + and power since adb reboot fastboot was not working.