"There were build errors" but no errors

After attempting to rebuild my project files the project was somewhat operational. However now If I try to run an error and then run “the last successful build” I get an error in the live coding recompile:
“No PDB file found for module UnrealEditor… live coding will be disabled for this session”.

This only happens If I start the editor running “the last successful build”. If I start the editor with clean code then try to program and debug from there it works.

For the time being Ive got “live coding” disabled in my editor preferences but Ive gotta find a new pdb file