http://<host>:<port>/dev is not reachable
The page http://<host>:<port>/dev contains useful reports and troubleshooting instruments, but sometimes it might be unreachable with the following error:
The server understood the request, but is refusing to fulfill it.
By design, only those users who have default admin role assigned are able to use
/dev functionality. Other roles, even if they provide all available permissions, can't navigate to the
Log in under a user with the default admin role assigned, who can use