External USB drive not detected under mOode 7.4.1

[Tim Curtis]

The log entry below indicates MPD crashed during indexing. This would suggest some sort of resource issue, use of 64-bit kernel,  or possibly a corrupt song file or directory that caused the crash.

Code:

20220104 113427 watchdog: Error: MPD restarted (check syslog for errors)

It's not really obviously to me whats might be the cause. I have a couple of ext4 USB sticks and they work just fine.