Unhandled config request

[scline]

2021-10-23 16:37:50,808 DEBUG waitress-1: Config request from 'xx.xx.xx.xx:8100'
2021-10-23 16:37:50,809 ERROR waitress-1: Exception on /api/v1/config/scline [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.9/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/app/./app.py", line 207, in api_config
    database_tmp[group][remote_id]["tags"]["src_name"] = database_tmp[group][requesting_probe_id]["tags"]["probe_name"]
KeyError: 'xx.xx.xx.xx:8100'

[scline]

Believe this is due to a probe requesting a config from the API when it has not been registered. Need to log the error and return no value or error.