We encountered a problem with a command while building your project. To resolve this error, double check your project configuration and installed dependencies are correct and have not changed recently.

Problem in your project's configuration. Invalid "python.version": expected one of (2, 2.7, 3, 3.5, 3.6, 3.7, 3.8, pypy3.5), got 3.1

The configuration key "build.image" is deprecated. Use "build.os" instead to continue building your project. Read more at https://docs.readthedocs.io/en/stable/config-file/v2.html#build-os