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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def validate_gate():
 """Check Gate connection."""

    try:
        credentials = get_env_credential()
        LOG.debug('Found credentials: %s', credentials)
        LOG.info('Gate working.')
    except TypeError:
        LOG.fatal('Gate connection not valid: API_URL = %s', API_URL)