Integrity check fails continuously

[dvodvo]

Using webpacker and having installed via yarn add sms-length our deployments and compilation have consistently failed to conclude

rake stdout: Nothing written
rake stderr: warning Integrity check: Top level patterns don't match
error Integrity check failed
error Found 1 errors.


========================================
  Your Yarn packages are out of date!
  Please run `yarn install --check-files` to update.
========================================

while the reporting did not point to a single point of failure, we deduced, by going through our commits that this was the culprit

yarn remove sms-counter returns deployment to normal.