【Git】「modified content, untracked content」とでて、git addできない

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
  (commit or discard the untracked or modified content in submodules)
        modified:   deployment-application/react (modified content, untracked content)

no changes added to commit (use "git add" and/or "git commit -a")

サブモジュールになっていたので、消した

rm -fr deployment-application/react/.git