App Names and Links changed, no access

Hello,

i installed 2-3 apps like bluespice, wordpress, nextcloud and changed the names and URLs as follows

bluespice in wiki, url = wiki

wordpress in blog, url = blog

nextcloud in share, url = share

xentral in erp, url = erp

Unfortunately I can’t get access to the apps anymore after restarting the UCS. Get a white page because the URL IP address UCS/blog cannot be called.

What is missing? Where is the error?