This was just a regular upgrade (I went through dozens of these).
The new 6.12 version fails to start with the following error message:
File "lib/python3.8/site-packages/pgadmin4/pgAdmin4.py", line 93, in <module>
app = create_app()
File "/path-to/opt/pgadmin4/lib/python3.8/site-packages/pgadmin4/pgadmin/__init__.py", line 270, in create_app
create_app_data_directory(config)
File "/path-to/opt/pgadmin4/lib/python3.8/site-packages/pgadmin4/pgadmin/setup/data_directory.py", line 117, in create_app_data_directory
_create_directory_if_not_exists(config.AZURE_CREDENTIAL_CACHE_DIR)
File "/path-to/opt/pgadmin4/lib/python3.8/site-packages/pgadmin4/pgadmin/setup/data_directory.py", line 20, in _create_directory_if_not_exists
os.mkdir(_path)
FileNotFoundError: [Errno 2] No such file or directory: '/var/lib/pgadmin/azurecredentialcache'
My setup has absolutely nothing to do with Azure. I use python wheel having PgAdmin installed in an unprivileged environment, so I am puzzled why it is all of sudden trying to look for something in "/var/lib/pgadmin" or create things there?