Okay, I believe there is a fix coming your way early next week - the fix is to make sure the installer removes older forms of the connector and visual - I suspect that you have installed the v3 connector, but the v2 is still there.
Rather than wait, you can remove all this cruft from the custom connectors and visuals folders.
\Documents\Power BI Desktop\Custom Connectors
\Documents\Power BI Desktop\Custom Visuals
And then get the latest installer here: Log in | Speckle