Issue - Feedback Type: Frown (Error) Timestamp: 2026-05-18T06:48:49.3403920Z Local Time: 2026-05-1

Hi,

This error typically arises when Power BI Desktop fails to correctly interpret a JSON response, often because of:

• A corrupted Power Query step
• An invalid API or connector response
• Cache corruption
• A bug in the April 2026 Desktop version

Recommended actions:

• Clear the Power BI cache
• Temporarily disable preview features
• Review recently altered Power Query steps Update or reinstall the WebView2 runtime
• Test the PBIX file in an older version of Power BI Desktop

As this is a PowerBINonFatalError, the file itself is likely intact, and the issue is most likely tied to the local Desktop environment.

Hope this helps!

Thanks!