I am migrating reports from .Net Framework 4.5.2 to .Net Core 3.1. I've been having issues with the report designer within Visual Studio as it seems not to work. I've been trying for a while, with different libraries/dlls but no success. The reports do work on Core, the only problem seems to be the VS Designer. We really don't wanna switch to some other designer to edit out existing reports so if possible we'd like to use it the same way that we've been using it till now. The image with the error is attached. How would we go about fixing this? Is it even possible? Thank you for answer in advance!