Slack error

[TAnas0]

Current behavior

When the SurveyCTO DAG using the CSV import (https://github.com/hikaya-io/connectors/blob/master/DAGs/pull_survey_cto_data_csv.py) finishes executing, the following error occurs when it is supposed to send a Slack notification:

....
[2021-04-01 20:00:54,058] {{python_operator.py:114}} INFO - Done. Returned value was: None
[2021-04-01 20:00:54,190] {{logging_mixin.py:95}} INFO - [�[34m2021-04-01 20:00:54,190�[0m] {{�[34mbase_hook.py:�[0m84}} INFO�[0m - Using connection to: �[1mid: slack. Host: https://hooks.slack.com/services/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, Port: None, Schema: , Login: , Password: XXXXXXXX, extra: {}�[0m�[0m
[2021-04-01 20:00:54,198] {{logging_mixin.py:95}} INFO - [�[34m2021-04-01 20:00:54,197�[0m] {{�[34mbase_hook.py:�[0m84}} INFO�[0m - Using connection to: �[1mid: slack. Host: https://hooks.slack.com/services/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, Port: None, Schema: , Login: , Password: XXXXXXXX, extra: {}�[0m�[0m
[2021-04-01 20:00:54,198] {{logging_mixin.py:95}} INFO - [�[34m2021-04-01 20:00:54,198�[0m] {{�[34mhttp_hook.py:�[0m131}} INFO�[0m - Sending '�[1mPOST�[0m' to url: �[1mhttps://hooks.slack.com/services/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�[0m�[0m
[2021-04-01 20:00:54,227] {{logging_mixin.py:95}} WARNING - /usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py:1004: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning,
[2021-04-01 20:00:58,543] {{logging_mixin.py:95}} INFO - [�[34m2021-04-01 20:00:58,542�[0m] {{�[34mlocal_task_job.py:�[0m105}} INFO�[0m - Task exited with return code 0�[0m