Issue #3349189 by Daniel.Moberly: Deprecated: preg_replace(): Passing null to...

Issue #3349189 by Daniel.Moberly: Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /app/web/modules/contrib/fontawesome/fontawesome.module on line 431

fontawesome.module

@@ -428,7 +428,7 @@ function fontawesome_entity_presave(EntityInterface $entity) {
           foreach ($fields as $field) {
             // Find and replace SVG strings with original icon HTML.
             $fieldValue = $field->getValue();
-            $fieldValue['value'] = preg_replace('%<svg .*?class="svg-inline--fa.*?<\/svg><!--\s?(<(span|i).*?<\/(span|i)>).*\s?-->%', '$1', $fieldValue['value']);
+            $fieldValue['value'] = preg_replace('%<svg .*?class="svg-inline--fa.*?<\/svg><!--\s?(<(span|i).*?<\/(span|i)>).*\s?-->%', '$1', $fieldValue['value'] ?? '');
             $field->setValue($fieldValue);
           }
         }