Closing as requested.  If we can get a debug we might be able to investigate further.  

Clearly my search-fu can be improved. I looked for a report and didn't find it. Time to close this.

Hit enter to soon, please complete subject with '" on first load'

After upgrading to 11.3 from 11.2, and navigating to the plugin directory for the first time, this error was displayed:

[Errno 2] No such file or directory: '/mnt/Gion/iocage/.plugins/github_com_freenas_iocage-ix-plugins_git/INDEX'

Traceback is shown with it:

Error: Traceback (most recent call last):{{  }}

File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 130, in call_method    io_thread=False){{  }}

File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1091, in _call_    return await run_method(methodobj, *args){{}} 

File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1015, in _run_in_conn_threadpool    return await self.run_in_executor(self._ws_threadpool, method, *args, **kwargs){{  }}

File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1003, in run_in_executor    return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs)){{  }}

File "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run    result = self.fn(*self.args, **self.kwargs)  File "/usr/local/lib/python3.7/site-packages/middlewared/schema.py", line 953, in nf    return f(*args, **kwargs){{  }}

File "/usr/local/lib/python3.7/site-packages/middlewared/plugins/jail.py", line 179, in query    resource_list = iocage.list('all', plugin=True, plugin_data=True)  File "/usr/local/lib/python3.7/site-packages/iocage_lib/iocage.py", line 1323, in list    **kwargs{{  }}

File "/usr/local/lib/python3.7/site-packages/iocage_lib/ioc_list.py", line 84, in list_datasets    _all = self.list_all(ds){{  }}

File "/usr/local/lib/python3.7/site-packages/iocage_lib/ioc_list.py", line 493, in list_all    os.path.join(repo_obj.git_destination, 'INDEX')

FileNotFoundError: [Errno 2] No such file or directory: '/mnt/Gion/iocage/.plugins/github_com_freenas_iocage-ix-plugins_git/INDEX'

The missing file is created in the background, and the error does not occur again when navigating to the plugins list again.