500 error on `sample.meltanodata.com` after 1.15.0 update
From the log, it seems like the default value from the migration is not properly seeded in instances that already have a generated user.
Traceback (most recent call last):
File "/var/meltano/.venv/lib/python3.6/site-packages/flask/app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "/var/meltano/.venv/lib/python3.6/site-packages/flask/app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/var/meltano/.venv/lib/python3.6/site-packages/flask_restful/__init__.py", line 269, in error_router
return original_handler(e)
File "/var/meltano/.venv/lib/python3.6/site-packages/flask/app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/var/meltano/.venv/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/var/meltano/.venv/lib/python3.6/site-packages/flask/app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "/var/meltano/.venv/lib/python3.6/site-packages/flask/app.py", line 1935, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/var/meltano/.venv/lib/python3.6/site-packages/flask_security/decorators.py", line 236, in wrapper
return f(*args, **kwargs)
File "/var/meltano/.venv/lib/python3.6/site-packages/flask_security/views.py", line 78, in login
login_user(form.user, remember=form.remember.data)
File "/var/meltano/.venv/lib/python3.6/site-packages/flask_security/utils.py", line 77, in login_user
if not _login_user(user, remember): # pragma: no cover
File "/var/meltano/.venv/lib/python3.6/site-packages/flask_login/utils.py", line 180, in login_user
user_logged_in.send(current_app._get_current_object(), user=_get_user())
File "/var/meltano/.venv/lib/python3.6/site-packages/blinker/base.py", line 267, in send
for receiver in self.receivers_for(sender)]
File "/var/meltano/.venv/lib/python3.6/site-packages/blinker/base.py", line 267, in <listcomp>
for receiver in self.receivers_for(sender)]
File "/var/meltano/.venv/lib/python3.6/site-packages/meltano/api/security/auth.py", line 120, in _user_logged_in_hook
user.login_count += 1
TypeError: unsupported operand type(s) for +=: 'NoneType' and 'int'