Hello, Esri Technical Support has logged BUG-000127774 Signing into ArcGIS Pro with an ArcGIS Online account that uses Google to sign in fails with the errors "An error has occurred in the script on this page" and "Google couldn't sign you in." We are currently looking into this issue. If you encounter this issue, I encourage that you submit a support ticket so that we can get you attached to this bug. Thank you, Madison
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