fix(log): Log exception class when message is empty

[nickvergessen]

• Resolves:
• Before is first line
• After is last line

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[tcitworld]

Maybe add an "Exception thrown:" prefix for context?

[ChristophWurst]

Can we also find out where an empty log message is logged?

[nickvergessen]

Can we also find out where an empty log message is logged?

The error from production was in logged via this:

server/index.php

Line 81 in bb2c2bb

\OC::$server->get(LoggerInterface::class)->error($ex->getMessage(), [

[nickvergessen]

Added the prefix

[nickvergessen]

/backport to stable27

[nickvergessen]

/backport to stable26