I am trying to set up a course as an LTI tool using the new "Publish as LTI Tool" feature of Moodle 3.1.1, but so far the LTI consumers (Schoology and Moodle) haven't been able to get a response from the server. The screen I get shows the message "This error (HTTP 500 Internal Server Error) means that the website you are visiting had a server problem which prevented the webpage from displaying."
Can someone help me figuring out what's wrong? I have no coding skills whatsoever and am fairly new to Moodle itself, so I have no idea what to look for to even begin addressing the problem. You will probably need more information than the one above; just tell me where I can get it, so I can post it.
Thanks in advance.