Hi Raphaël Jakse ,
sorry for the late response. I tried that but I am still getting an error. The log sais:
192.168.100.27 - - [20/Sep/2024:10:46:01 +0000] "GET /index.php/apps/xwiki/settings/pingInstance?url=https%3A%2F%2Fwiki.xxx.at HTTP/1.1" 400 835 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:130.0) Gecko/20100101 Firefox/130.0"
It gets a 400 Bad Request.