Missing layouts.yml file

This worked for me when updating a Drupal 8 varbase site to Drupal 9.

I was able to test it like this:

Add to your repositories:

  "repositories: {
    "varbase_total_control": {
      "type": "vcs",
      "url": "https://git.drupalcode.org/issue/varbase_total_control-3226341.git"
    },

Require the dev branch, but alias it as a real version so the rest of the composer stack doesn't break:

composer require "drupal/varbase_total_control:dev-3226341-missing-layouts.yml-file as 9.0.3"

After that, "drush updb" worked.

Thanks, for following up on the issue.
Better to remove any use of masonry and masonry API when upgrading
Or after upgrade

As #3145800: Remove [Masonry API] module and its related configuration from the 9.0.x branch →

On another subject on Gitlab MR composer require directly for a fork issue branch or diff

https://www.drupal.org/docs/develop/git/using-git-to-contribute-to-drupa... →

If you use the URL to the Gitlab MR directly, your codebase will change without warning, as people work on the merge request.