after having some trouble with the upgrade to 5.6, it seems that OMERO and OMERO.web are running again. Login with OMERO.insight is also working. Login via OMERO.web fails, however.
If I use my login with a wrong password, I get the following error:
Connection not available, please check your user name and password.
If I use my correct password, I get a web-page sying
Internal server error
The server is reachable from the OMERO.web installation, and added to omero.web.server_list.
Also, remote login via CLI from OMERO.web is working.
Any help would be great.