Using the version 3.1 with Apache on my local server.
Which error do you get?
https://open.vanillaforums.com/discussion/comment/219669/#Comment_219669
https://open.vanillaforums.com/discussion/26786/tutorial-how-to-enable-a-debug-log-and-collect-debugging-information
What have changed that could cause it?
Did you upgrade, did you run /utility/update
Maybe also /utility/structure
https://open.vanillaforums.com/discussion/comment/233540/#Comment_233540
Did you add or change a plugin, then undo that.
Comments
Which error do you get?
https://open.vanillaforums.com/discussion/comment/219669/#Comment_219669
https://open.vanillaforums.com/discussion/26786/tutorial-how-to-enable-a-debug-log-and-collect-debugging-information
What have changed that could cause it?
Did you upgrade, did you run /utility/update
Maybe also /utility/structure
https://open.vanillaforums.com/discussion/comment/233540/#Comment_233540
Did you add or change a plugin, then undo that.