The file /home/docs/checkouts/readthedocs.org/user_builds/plotnine/checkouts/dev/doc/conf.py doesn't exist. Make sure it's a valid file path.

Problem in your project's configuration. Invalid configuration option "python.system_packages". This configuration key has been deprecated and removed. Refer to https://blog.readthedocs.com/drop-support-system-packages/ to read more about this change and how to upgrade your config file.

Failed to import project: Failed to get code from 'https://code.google.com/p/pyqt-fit/' (git clone): 128 git clone error output: fatal: https://code.google.com/p/pyqt-fit/info/refs not valid: is this a git repository?

Problem in your project's configuration. No default configuration file found at repository's root. See https://docs.readthedocs.io/en/stable/config-file/