This is all "ERROR" log entries. The log is well over 100MB:
2022/02/20 20:57:45 ERROR : System Volume Information: failed to open directory "System Volume Information": open \\?\E:\System Volume Information: Access is denied.
2022/02/20 20:59:42 ERROR : Encrypted drive 'encryptednas:': not deleting files as there were IO errors
2022/02/20 20:59:42 ERROR : Encrypted drive 'encryptednas:': not deleting directories as there were IO errors
2022/02/20 20:59:42 ERROR : Attempt 1/3 failed with 2 errors and: not deleting files as there were IO errors
2022/02/20 20:59:42 ERROR : System Volume Information: failed to open directory "System Volume Information": open \\?\E:\System Volume Information: Access is denied.
2022/02/20 21:01:32 DEBUG : Encrypted drive 'encryptednas:': Waiting for checks to finish
2022/02/20 21:01:32 DEBUG : Encrypted drive 'encryptednas:': Waiting for transfers to finish
2022/02/20 21:01:32 ERROR : Encrypted drive 'encryptednas:': not deleting files as there were IO errors
2022/02/20 21:01:32 ERROR : Encrypted drive 'encryptednas:': not deleting directories as there were IO errors
2022/02/20 21:01:32 ERROR : Attempt 2/3 failed with 2 errors and: not deleting files as there were IO errors
2022/02/20 21:01:32 ERROR : System Volume Information: failed to open directory "System Volume Information": open \\?\E:\System Volume Information: Access is denied.
2022/02/20 21:03:28 DEBUG : Encrypted drive 'encryptednas:': Waiting for checks to finish
2022/02/20 21:03:28 DEBUG : Encrypted drive 'encryptednas:': Waiting for transfers to finish
2022/02/20 21:03:28 ERROR : Encrypted drive 'encryptednas:': not deleting files as there were IO errors
2022/02/20 21:03:28 ERROR : Encrypted drive 'encryptednas:': not deleting directories as there were IO errors
2022/02/20 21:03:28 ERROR : Attempt 3/3 failed with 2 errors and: not deleting files as there were IO errors
2022/02/20 21:03:28 INFO :
Transferred: 1.422 MiB / 1.422 MiB, 100%, 5.299 KiB/s, ETA 0s
Errors: 2 (retrying may help)
Checks: 344513 / 344513, 100%
Transferred: 1 / 1, 100%
Elapsed time: 5m43.6s
2022/02/20 21:03:28 DEBUG : 2 go routines active
2022/02/20 21:03:28 Failed to sync with 2 errors: last error was: not deleting files as there were IO errors