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配置完知识库，进行切分报错

报的错如下
document sync error cryptography>=3.1 is required for AES algorithm

pip install -U cryptography 

之后重新运行程序

切分完成后，进行问答时后台日志报错

ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host=‘github.com’, port=443): Max retries exceeded with url: /explosion/spacy-models/releases/download/zh_core_web_sm-3.5.0/zh_core_web_sm-3.5.0-py3-none-any.whl (Caused by NewConnectionError(‘<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f3f44862ec0>: Failed to establish a new connection: [Errno 111] Connection refused’))

pip install -U spacy
python -m spacy download zh_core_web_sm-3.5.0 --direct