Error (INVALID_ARGUMENT) when reconnecting BigQuery Data Source with Viewer's Credentials

[rafa_3]

Hello,

I am encountering an issue when attempting to reconnect a BigQuery data source in Looker Studio. The data source was originally connected using Viewer’s Credentials. After modifying the connection settings and trying to reconnect, the process fails.

We are using a Custom Query, but the same issue persists even when testing with a direct connection to a single table.

I checked the Developer Tools, and the API response returns the following error:

{
  "reason": 3,
  "errorStatus": {
    "reason": 3,
    "code": 3,
    "reasonStr": "INVALID_ARGUMENT",
    "errorCategoryStr": "USER_CONFIGURATION",
    "category": 2,
    "uniqueErrorCode": "f6efcda7",
    "errorDetails": {
      "invalidArgumentErrorDetails": {
        "invalidEmails": [""]
      }
    }
  },
  "params": {
    "errorId": "f6efcda7"
  }
}