Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-mirrors/Radarr/commits/commit/b40c6ba7b8d540afb34be7263af745ab050ab521/IISExpress/custerr/en-us/404-14.htm
You should set ROOT_URL correctly, otherwise the web may not work correctly.