Mage OSS through 0.9.80 before 76c4f46 can proceed with session creation upon encountering an unknown OAuth provider.
https://thecoregroup.net/category/the-core-group/
https://github.com/mage-ai/mage-ai/pull/6205
https://github.com/mage-ai/mage-ai/pull/6204/changes/76c4f467f3654041d8899b1c4447a985710d26c0