Python personal gateway credentials, A problem occurred while processing your Python script.

Hi salmon ,

1. Please refer the following trouble shooting:

Error: The credentials provided for the dataset are invalid. Please update the credentials through a refresh or in the Data Source Settings dialog to continue.

If you get a credentials message, it could mean:

The usernames and passwords that you used to sign in to data sources aren't up to date. In Power BI, go to refresh settings for the dataset. In Manage Data Sources, select Edit credentials to update the credentials for the data source.

This error is a known issue, and it's being looked at. To work around the problem, have a separate query for the cloud source and the on-premises source. Then, use a merge or append query to combine them.

Please refer this article: Troubleshooting Power BI gateway (personal mode)

2. Or from the Data Source Settings dialog, select the data source(s) and then select Edit Permissions... and ensure that the Privacy Level is set to Public.

3. Please update the gateway to the latest version, and install the on-premises data gateway (personal mode) on the same machine as Python directory.

4. If it doesn't meet your requirement, We suggest you to open a ticket here for help if you are a pro user: https://powerbi.microsoft.com/en-us/support/

Best regards,

Community Support Team _ zhenbw

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.