really need help urgently

just for added clarification i cannot open ue5 to even change this

hi @ThicksetList563,
you need to go into the project using Windows File Explorer and delete everything in the DerivedCache folder this folder contains all the shader compiled information.

When you converted your project from 4.26 I hope you used the create copy and convert option and not the convert in place option as the DerivedCache is from 4.26 and not recreated in 5.0

reload it from here Medieval Village Megapack with Interiors in Environments - UE Marketplace (