Some tokens show as "missing name or description" in status report
In my case, the answer is related to the autoslave module: https://www.drupal.org/node/2898888

Also discussed here (not resolved), https://www.drupal.org/node/1265848#comment-12191146

Other mentions online about the PHP memory settings had no effect for me.

Hopefully this helps someone as the issue has been quite elusive.