Then we can rule this out and it is better reported upstream. Maybe you can create an issue at https://github.com/wallabag/wallabag/issues and if so, please link it here then for context.
@privsec I enabled all modules you were showing in the screenshots but I cannot reproduce the log file issue. Is there anything else you configured? Also can you check via the webterminal what the permissions of the log file in question are?