I am running mediaiwiki on windows server and using IIS

I am getting this error, i have updated my wiki from 1.26 to latest version 1.42.1 , i did not jump from 1.26 to 1.42.1 directly , made few hops !

the page is loading but the vector skin is not applying and in the developer console I see the 500 error

Refused to execute script from ‘http://xxxxxx:8080/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector’ because its MIME type (‘text/html’) is not executable, and strict MIME type checking is enabled.

and when i click on that link i see this error

[0bd1c37609b216989be1c6fb] /load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector Error: Class “ResourceLoaderFileModule” not found

I am really frustrated its been 2 weeks i tried everything , downloaded the latest stable skin folder and placed it in skins folder.

Please someone help me out , I am new to this

Tried everything that’s on the internet but no luck

I have downloaded the latest skins from the site and replaced them in the skins directory but still i get that error, the problem is with all the skins i dont know y !