Any implimentation of 'log_rotate_size' => crashes Nextcloud

Nextcloud 20.0.4, Ubuntu 18.04LTS, PHP 7.4

I have been struggling with Nextcloud log files - they are BIG and writing or opening them begins to consume all system resources at some point.

I have tried ‘log_rotate_size’ => in various forms, but it immediately causes server error. Con somebody show me an example that works?

THX

Can you please show what you put there exactly and what the errors were?

I tried this:
‘log_rotate_size’ => 100 * 1024 * 1024,

and Nextcloud stopped serving - I had to remove the line before I could look at a log file.

THX

Using nearly the same settings like you and it works good.
What other log parameters does your config.php contain?

Official docs: