Issue #3426100: Add required return statement for FillPdfFormDuplicateForm::getDescription()

src/Form/FillPdfFormDuplicateForm.php

@@ -24,6 +24,7 @@ class FillPdfFormDuplicateForm extends FillPdfFormConfirmFormBase {
    * {@inheritdoc}
    */
   public function getDescription() {
+    return $this->t('Duplicate a FillPDF form.');
   }
 
   /**