I installed Mediawiki with the Citizen Skin. Unfortunately logout does not work properly. It says “Cannot logout now: HTTP”. Apparently a POST-error occurs:
“load.php?lang=en&modules=jquery&skin=citizen&version=1xgm5:130 POST https://wiki.ventureclienthandbook.com/api.php 500”.
I tried to set the link on the logout-button to “https://wiki.ventureclienthandbook.com/index.php?title=Special:UserLogout”. That worked quite well. Still: If I click on the button, the error occurs. If I copy the URL into my browser manually, the proper logput-page appears. Can someone help?