Log is spotted when closing a document in collabora editor

[davitol]

Steps

1. Open a .ods file via files view
2. Made some changes and close the document (see screenshot above)
3. Check owncloud.log

Expected result

No log should be spotted

Actual result

Following log is spotted:

{"reqId":"D4uRlkp46az3nFcqFVK5","level":2,"time":"2020-03-06T13:45:28+00:00","remoteAddr":"172.19.0.1","user":"admin","app":"richdocuments","method":"POST","url":"\/apps\/richdocuments\/wopi\/files\/14_ocaw7yg7jmy3_0_0\/contents?access_token=wzNNLDOjAvP33346m8tHMOpGsePvhL82&access_token_ttl=0","message":"wopiPutFile(): mtime"}

Note: Log level: Warning (2)

Version

ownCloud 10.4.1 and richdocuments 2.3.0 RC1

To be investigated if it is a regression or not

[davitol]

Tested with oC 10.4 EE and richdocuments 2.1.2. and cannot reproduce it, so it is probably a regression

[pmaier1]

If it's just about the log entry, not a blocker. Should be fixed though, of course.

[AlexAndBear]

Was a warning log entry, which should be indeed debug, fixed.