Leave a Drupal project idle and unmaintained for a year, and a new, non-backwards-compatible Druoal version has been released and you&#x27;ll need to rewrite everything.<p><a href="https:&#x2F;&#x2F;www.drupal.org&#x2F;node&#x2F;2613652" rel="nofollow">https:&#x2F;&#x2F;www.drupal.org&#x2F;node&#x2F;2613652</a>