XamlGTask and XamlFiles errors in targets STILL

Hi, I'm getting this error every 20-30 minutes. I'm now on XF 4.0.0.425677 and VS2019 Mac(8.0.8 build 2). I had this back on XF 3.4 and until now. If I delete build dirs and clear/refresh nuget it goes away. I've checked to make sure all my libs have the same Version #. What have others done to make this go away?
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The "XamlFiles" parameter is not supported by the "XamlGTask" task. Verify the parameter exists on the task, and it is a settable public instance property.
The "XamlGTask" task could not be initialized with its input parameters.