>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3576096. --> Reported by: [s-jack](https://www.drupal.org/user/655916) Related to !659 >>> <h3 id="overview">Overview</h3> <p> When upgrading Canvas from 1.0.3 to 1.2.0, or when clearing caches with<br> `drush cr` after the upgrade, a large number of PHP warnings are triggered:</p> <p> [warning] Undefined array key "weight" ConfigEntityQuery.php:32</p> <p> The warnings appear during cache clears, module uninstalls, and any other<br> operation that triggers config entity queries with sorting, including<br> operations driven by third-party modules such as Admin Toolbar.</p> <p> The full stack trace points to:</p> <p> Drupal\canvas\CoreBugFix\ConfigEntityQuery-&gt;recursiveCmp() (line 32)</p> <p><strong>Original report</strong><br> When updating from 1.1.1 to 1.2.0 via Composer, and again when clearing the cache with Drush, a large number of warnings are displayed.<br> I failed to note the warnings during the Composer update and have forgotten them.<br> Below are the warnings from the cache clear.</p> <blockquote><p>[warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32<br> [warning] Undefined array key "weight" ConfigEntityQuery.php:32 </p></blockquote> <p>ENV: core 11.3.3, drush 13.7.1</p> <h3 id="proposed-resolution">Proposed resolution</h3> <p> The `recursiveCmp()` method in `src/CoreBugFix/ConfigEntityQuery.php` accesses<br> `$a[$field]` and `$b[$field]` unconditionally (line 32). When the sort field is<br> `weight`, and the config entity type being sorted (e.g. media types, node types)<br> does not define a `weight` key, PHP 8 emits an "Undefined array key" warning.</p> <p> The fix should guard against missing keys before comparing, for example using<br> `isset()` or `??` null-coalescing before accessing `$a[$field]` / `$b[$field]`<br> in `recursiveCmp()`. This regression was introduced in #3571997.</p> <h3 id="ui-changes">User interface changes</h3> > Related issue: [Issue #2862699](https://www.drupal.org/node/2862699)