[ERROR] TypeError: 'module' object is not callable

[yucomds]

Hi, we have this error after deploying a new version of lambdaedge. The only differences with original version are the following:

...
line 30 DEBUG = True 
...
line 213 return "!!! "+caption_string
...

In CloudWatch events log we have this issue:

[ERROR] TypeError: 'module' object is not callable
Traceback (most recent call last):
  File "/var/lang/lib/python3.7/imp.py", line 234, in load_module
    return load_source(name, filename, file)
  File "/var/lang/lib/python3.7/imp.py", line 171, in load_source
    module = _load(spec)
  File "<frozen importlib._bootstrap>", line 696, in _load
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/var/task/lambda_function.py", line 130, in <module>
    def put_count_metrics(metric_name, metric_value, pipe_id, lang_id, metrics={}):

Any suggestion?

Thanks in advance,
Yuri