Issue #3231760 by opi: addNotice Method does not exist

src/Plugin/Field/FieldFormatter/AdvancedTextFormatter.php

@@ -216,7 +216,7 @@ class AdvancedTextFormatter extends FormatterBase {
         break;
 
       case static::FORMAT_PHP:
-        \Drupal::messenger()->addNotice(t('The PHP filter has been deprecated. Please use the "Limit allowed HTML tags" filter instead.'));
+        $this->messenger()->addWarning(t('The PHP filter has been deprecated. Please use the "Limit allowed HTML tags" filter instead.'));
 
       case static::FORMAT_LIMIT_HTML:
         $text  = [];
@@ -287,7 +287,7 @@ class AdvancedTextFormatter extends FormatterBase {
           break;
 
         case static::FORMAT_PHP:
-          \Drupal::messenger()->addNotice(t('The PHP filter has been deprecated. Please use the "Limit allowed HTML tags" filter instead.'));
+          $this->messenger()->addWarning(t('The PHP filter has been deprecated. Please use the "Limit allowed HTML tags" filter instead.'));
 
         case static::FORMAT_LIMIT_HTML:
           $output = Xss::filter($output, $this->getSetting('allowed_html'));