Getting error 8000000 while creating a new page project

Hi I have created a page project previously. I want to create a new one but what I get is

An unknown error occurred (Code: 8000000)

I tried to use web console, the following request returns 500{account id}/pages/connections/github
    "result": null,
    "success": false,
    "errors": [
            "code": 8000000,
            "message": "An unknown error occurred"
    "messages": []

Any idea?

A post was merged into an existing topic: Pages failed to create new project