title: "ValueError: Unknown event source" with Zappa and SQS events to trigger lambda
body: <p>I am  trying to set up SQS events' trigger for my serverless python's flask app. Once I try to <strong>deploy</strong> using <strong>Zappa</strong> it will give me this message:</p>
  
  <pre><code>Oh no! An error occurred! :(
  
  ==============
  
  Traceback (most recent call last):
    ...
    File "...\venv\lib\site-packages\zappa\core.py", line 2613, in unschedule_events
      self.boto_session
    File "...\venv\lib\site-packages\zappa\utilities.py", line 317, in remove_event_source
      event_source_obj, ctx, funk = get_event_source(event_source, lambda_arn, target_function, boto_session, dry=False)
    File "...\venv\lib\site-packages\zappa\utilities.py", line 256, in get_event_source
      raise ValueError('Unknown event source: {0}'.format(arn))
  ValueError: Unknown event source: arn:aws:sqs:MY_QUEUE
  
  ==============
  </code></pre>
  
  <p>Here is the relevant information in my <em>zappa_settings.json</em></p>
  
  <pre><code>"dev_events": {
  "debug": true,
  "log_level": "DEBUG",
  "app_function": "application.app",
  "aws_region": ...,
  "profile_name": "default",
  "project_name": ..,
  "runtime": "python3.6",
  "s3_bucket": ...,
  "timeout_seconds": 30,
  "keep_warm": false,
  "keep_warm_expression": "rate(5 minutes)",
  "memory_size": 256,
  "manage_roles": true,
  "use_precompiled_packages": true,
  "environment_variables": {
    ...
  },
  "aws_environment_variables ": {
    ...
  },
  "events": [
    {
      "function": "application.process_simulation_paths_queue",
      "event_source": {
        "arn": "arn:aws:sqs:MY_QUEUE",
        "batch_size": 10,
        "enabled": true
      }
    }
  ],
  "exclude": [
    ...
  ]
  }
  </code></pre>
  
  <p>I already created my SQS's queue with the right name and copied its ARN, then I followed the format documented in the <a href="https://github.com/Miserlou/Zappa/issues/1613" rel="nofollow noreferrer">issue</a> and this <a href="https://github.com/Miserlou/Zappa/pull/1617/files" rel="nofollow noreferrer">PR</a> to configure my <em>zappa_settings.json</em></p>