WocekDerejczyk
There should be an error from the backend. Check the logs in your directory flarum/storage/logs or turn on debug mode by editing the config luceos told you about, it should show you the error when you load the page. You can turn the extension off as you said if that's the one causing the issue, but no one will be able to help you fix the issue so you can use the extension then. If you provide the logs hopefully someone can help resolve the issue.
