Can't edit a downloaded template from Overleaf on TexMaker

I have downloaded some templates from Overleaf and I am trying to modify them in TexMaker, but whatever I do (Even delete the whole code) renders no result on the PDF output.

On the other side, when I am editing or writing anything else, rather than a template, everything is OK.

I am using the local PDF viewer and not any external one.

I would be glad to help with more specific information but I have no idea what to post as extra!

Edit: Showing the exact error messages I am getting in the log:
They are appearing at line 188 and there is nowhere a line 188.

Edit 2: After searching and searching I found what the problem was. Code was not running because of the "Todonotes package".

! Undefined control sequence.<argument> nointerlineskip AddToHook{shipout/background}{put (0,ESO@yof... }

! LaTeX Error: Missing begin{document}.See the LaTeX manual or LaTeX Companion for explanation.Type H <return> for immediate help.... }

! Undefined control sequence.<argument> ESO@yoffsetI }

! Undefined control sequence.<argument> ... ESO@HookIIBG @empty }}AddToHook{shipout/foreground}{put ... }

! Undefined control sequence.<argument> ESO@yoffsetI }

! LaTeX Error: File `todonotes.sty' not found.Type X to quit or <RETURN> to proceed,or enter new name. (Default extension: sty)Enter file name:! Emergency stop.<read > setlength