Issue
If you receive an error message like the following:
the module {module_name} does not exist
Resolution
This likely means that you have removed this module from your codebase, but there may still be references to this module in the database.
If you no longer need this module, tips and commands to resolve this issue can be found at:
https://www.drupal.org/forum/support/post-installation/2019-05-16/the-module-does-not-exist
If this module is still needed for your site, please ensure that this module is installed.