python network_error ai_generated true

ERROR: JSON object must be str, bytes or bytearray, not 'NoneType'

ID: python/pip-invalid-json-from-index

Also available as: JSON · Markdown · 中文
80%Fix Rate
85%Confidence
0Evidence
2025-09-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.9 active — — —

Root Cause

The PyPI index server returned an empty or non-JSON response, often due to network issues or server errors.

generic

中文

PyPI索引服务器返回了空或非JSON响应，通常由于网络问题或服务器错误。

Workarounds

  1. 85% success Use a different index or mirror 
    pip install package -i https://pypi.douban.com/simple/
  2. 80% success Check network connectivity and proxy settings 
    curl https://pypi.org/simple/package/
# If fails, configure proxy: pip install --proxy http://proxy:port package

Dead Ends

Common approaches that don't work:

  1. Retrying with --retries=10 80% fail

    Server issue may persist; retries don't fix malformed response.

  2. Using --no-cache-dir 90% fail

    Cache is not the cause; server response is invalid.