Error when trying to invoke mergetool from git

Question

Trying to invoke mergetool. Had previously set up both mergetool and difftool. Followed same process for both. Difftool works, but mergetool does not. When I try to invoke mergetool, I get:

SAR@DESKTOP-7MC10MV MINGW64 ~/projects/starter-web (master|MERGING)
$ git mergetool
Merging:
simple.html

Normal merge conflict for 'simple.html':
{local}: modified file
{remote}: modified file
The merge tool p4merge is not available as 'C:\Program Files\Perforce'

I have tried redoing the ~/.gitconfig, but it just pops the same error as above.

   [diff]
        tool = p4merge
    [difftool "p4merge"]
        path = C:/Program Files/Perforce/p4merge.exe
    [difftool]
        prompt = false
    [merge]
        tool = p4merge
    [mergetool "p4merge"]
        path = C:/Program Files/Perforce/p4merge.exe
    [mergetool]
        prompt = false