>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3412671. --> Reported by: [nterbogt](https://www.drupal.org/user/102218) Related to !27 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Looks like the weight field wasn't always saved to <code>0</code> in all previous versions of entity_hierarchy. So updating the schema to not null fails.</p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>Have a database with a <code>NULL</code> weight and attempt to run <code>entity_hierarchy_post_update_update_weight_column</code>.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Set <code>NULL</code> records to <code>0</code>.</p>