Error in the __init__.py with python version 3.9 // ValueError: unsopported format character '(' (0x28)

[josep123]

When i make a | sphinx-build doc html | the platfom make a warning

File "/linuxbrew/opt/python@3.9/lib/python3.9/site-packages/sphinx/transforms/post_transforms/init.py", line 177, in warn_missing_reference
logger.warning (msg % {'target': target},
ValueError: unsupported format character '(' (0x28) at index 48

[tk0miya]

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[tk0miya]

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