<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _get_error_message(response):
 """Attempt to extract an error message from response body"""

    try:
        data = response.json()
        if "error_description" in data:
            return data['error_description']
        if "error" in data:
            return data['error']
    except Exception:
        pass

    return "Unknown error"