域名为示例域名：

Traceback (most recent call last):
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During handling of the above exception, another exception occurred:
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    +------------------------------------
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    | requests.exceptions.ConnectionError: HTTPSConnectionPool(host='example.worker.dev', port=443): Max retries exceeded with url: /api/v1/category/index?user_id=0 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 101] Network is unreachable'))