UBT tool failed to build plus UnrealBuildTool failed

Good evening, I am having an issue packaging a project file. When I converted a project to 4.21 from 4.20 I ran into this error when I tried packaging.

I tried deleting the Saved/Intermediate/and Binaries and yet it still failed.

I even tried to clean up reconnectors.

It fixed some of it but not all of it, so now I’m clueless.

Any help is appreciated!