Integrity Check failed on some files after recovering instance

ℹ️ Support
1

I recovered my NC installation to a new instance.
Now the security check shows, that some files haven’t passed integrity check.
It seems to apply to the side_menu app. Uninstalling or reinstalling didn’t solve the problem.
The Technical information isn’t very clear on what to do. And it’s thousands of lines long.
Here is the starting of it:

Technical information

The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.

Results

  • side_menu
    • FILE_MISSING
      • .eslintrc.js
      • .git/FETCH_HEAD
      • .git/HEAD
      • .git/config
      • .git/description
      • .git/hooks/applypatch-msg.sample
      • .git/hooks/commit-msg.sample
      • .git/hooks/post-update.sample
      • .git/hooks/pre-applypatch.sample
      • .git/hooks/pre-commit.sample
      • .git/hooks/pre-merge-commit.sample
      • .git/hooks/pre-push.sample
      • .git/hooks/pre-rebase.sample
      • .git/hooks/pre-receive.sample
      • .git/hooks/prepare-commit-msg.sample
      • .git/hooks/push-to-checkout.sample
      • .git/hooks/update.sample
      • .git/index

And later:

Raw output

[side_menu] => Array
    (
        [FILE_MISSING] => Array
            (
                [.eslintrc.js] => Array
                    (
                        [expected] => 7080c19cfde3524db59e3388f9d34987f92ca370647ba3048abbce9b03231f6468b88d50d5e1666fe6d93077a9193ac0fe768d1c3ea03dacbf9e7717530d83b3
                        [current] => 
                    )

                [.git/FETCH_HEAD] => Array
                    (
                        [expected] => 29f1b267fe6728bb3b0f06d598043e7e35193121f8bc072fe5c21eab2b61674541e34c8fb8ca319298d35900f187603d82daefbe45b477506bb2c5e804ca1596
                        [current] =>
2

Ok, seems that it got fixed by an update of the apps developer.