Watcher.py crashes from time to time

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I implemented the Watcher.py in my K8s Cluster app container (to watch certain Label , NameSpace and Folder) and I get the following exception from time to time:

Traceback (most recent call last):
File "/app/watcher/watcher.py", line 99, in
main()
File "/app/watcher/watcher.py", line 95, in main
watchForChanges(label, targetFolder, url, method, payload)
File "/app/watcher/watcher.py", line 54, in watchForChanges
for event in stream:
File "/usr/local/lib/python3.6/site-packages/kubernetes/watch/watch.py", line 122, in stream
resp = func(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/apis/core_v1_api.py", line 11650, in list_namespaced_config_map
(data) = self.list_namespaced_config_map_with_http_info(namespace, **kwargs)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/apis/core_v1_api.py", line 11753, in list_namespaced_config_map_with_http_info
collection_formats=collection_formats)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/api_client.py", line 321, in call_api
_return_http_data_only, collection_formats, _preload_content, _request_timeout)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/api_client.py", line 155, in __call_api
_request_timeout=_request_timeout)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/api_client.py", line 342, in request
headers=headers)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/rest.py", line 231, in GET
query_params=query_params)
File "/usr/local/lib/python3.6/site-packages/kubernetes/client/rest.py", line 222, in request
raise ApiException(http_resp=r)
kubernetes.client.rest.ApiException: (500)
Reason: Internal Server Error
HTTP response headers: HTTPHeaderDict({'Content-Type': 'application/json', 'Date': 'Mon, 27 Apr 2020 13:28:06 GMT', 'Content-Length': '186'})
HTTP response body: b'{"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"resourceVersion: Invalid value: \"None\": strconv.ParseUint: parsing \"None\": invalid syntax","code":500}\n'

• The configmap I am loading is a valid certification file
• Using K8s 1.15
  Any idea what goes on to cause this crash?