pgAdmin 4 3.0 - bug when browsing on trigger functions

Hi,

Description of bug.

The SQL tab shows the following error when clicking on a trigger function: “Error retrieving the information - INTERNAL SERVER ERROR”

Issue replicated on both macOS (High Sierra 10.13.4) and docker (18.03.0-ce-mac60) versions.

Mac Version:
Version: 3.0
Copyright: Copyright 2013 - 2018, The pgAdmin Development Team
Python Version: 2.7.10 (default, Jul 30 2016, 19:40:32) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)]
Flask Version: 0.12.2
Application Mode: Desktop
Current User: pgadmin4(at)pgadmin(dot)org

Output from log

2018-04-17 11:47:59,885: ERROR werkzeug: Error on request:
Traceback (most recent call last):
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/werkzeug/serving.py", line 270, in run_wsgi
execute(self.server.app)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/werkzeug/serving.py", line 258, in execute
application_iter = app(environ, start_response)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1997, in __call__
return self.wsgi_app(environ, start_response)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1985, in wsgi_app
response = self.handle_exception(e)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1540, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/app.py", line 1598, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/Applications/pgAdmin 4.app/Contents/Resources/venv/lib/python/site-packages/flask/views.py", line 84, in view
return self.dispatch_request(*args, **kwargs)
File "/Applications/pgAdmin 4.app/Contents/Resources/web/pgadmin/browser/utils.py", line 254, in dispatch_request
return method(*args, **kwargs)
File "/Applications/pgAdmin 4.app/Contents/Resources/web/pgadmin/browser/server_groups/servers/databases/schemas/functions/__init__.py", line 345, in wrap
return f(*args, **kwargs)
File "/Applications/pgAdmin 4.app/Contents/Resources/web/pgadmin/browser/server_groups/servers/databases/schemas/functions/__init__.py", line 1053, in sql
) + '(' + res['rows'][0]['func_args'] + ')'
KeyError: ‘nspname'

Docker version:
Version: 3.0
Copyright: Copyright 2013 - 2018, The pgAdmin Development Team
Python Version: 3.6.5 (default, Mar 31 2018, 01:52:14) [GCC 6.4.0]
Flask Version: 0.12.2
Application Mode: Server
Current User: pgadmin(at)example(dot)com

Kind Regards,
Alan.