It looks like the errors are related to the FormIt Converter and Insight Total Carbon add-ons. These add-ons load from the following ADDIN files (replace # with number associated with the Revit version):
C:ProgramData\Autodesk\Revit\Addins\2025\FormItConverter.addin C:ProgramData\Autodesk\Revit\Addins\2025\Autodesk.TotalCarbonAnalysis.addin
Delete these files
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