(PHP8.1) Prevent notice: "Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in Drupal\menu_block\Plugin\Block\MenuBlock->build() (line 262) ..."
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3318627. -->
Reported by: [weseze](https://www.drupal.org/user/417521)
>>>
<p>After updating our PHP version from 7.4 to 8.1 we noticed this PHP notice on every page request for every menu_block.<br>
Seems a very easy fix though.</p>
<p>Pleaser review the attached patch.</p>
issue