The error is the first line - array out of bounds.
That can be on anything (yes, SM or SKM both).
Normally you would just open the file up mentioned, trow a breakpoint on that line or escape the whole code block thing in a Try Catch… assuming you build the engine from source thats trivial.
Cooking off the pre-built is similar. Except you can’t breakpoint it unless you build the engine from source (and listen, everyone should build from source… Since stuff epic releases almost never works…)
That said deleting folders is a really good tip for anyone (noob or otherwise) so kudos.
Just look up what to delete exactly and if you arent 100% sure back it up.
Last thing you want is to delete stuff and have to re-verify engine files cuz of a screw up.