How do I solve the error 'Video Filter missing: AE.ADBE_BRAW_Source_Settings' ?

This error message means that you opened a Premiere Pro project that was using Autokroma BRAW Studio plugins, and now you don't have our plugin installed anymore so it cannot find the Source Settings effect linked to each .BRAW in your Premiere Pro project.
The simplest to fix this issue to install again BRAW Studio.
Go back to BRAW Studio User Guide