Insert file in folder create a idindex.html

I'll be honest. What you've done with directories is a perversion. =)

Open your console and go to the codeigniter directory.
Update through the composer as I wrote above.

with compuser-update :


[RuntimeException]                                           
  Failed to execute git status --porcelain --untracked-files=no 
                                                               
  fatal: unknown index entry format 0x496e0000

can i overwrite system directory or there is another way to update ?