When I open the settings page of my theme, I see following error/warning popping up.
Deprecated function: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in Drupal\Component\Utility\Html::escape() (line 424 of core/lib/Drupal/Component/Utility/Html.php).
I don't know if it is directly related to the at-tool or at-them module or if it is related to my theme files itself.
The theme I use has been created in the early versions of drupal 8 and has been migrated further on to drupal 9.
Any Ideas?
Closed: outdated
2.0
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