fixed validation so empty titles cant be submitted

src/Form/RoblibIllLoanForm.php

@@ -76,6 +76,7 @@ class RoblibIllLoanForm extends FormBase
         \Drupal::moduleHandler()->loadInclude('upei_roblib_ill', 'inc', 'includes/db');
         upei_roblib_ill_log_request($payload, $err);
       }
+    }
 
       $trigger = $form_state->getTriggeringElement();
       if ($trigger['#value'] != 'Lookup DOI' && empty($form_state->get('step'))) {
@@ -87,7 +88,6 @@ class RoblibIllLoanForm extends FormBase
         }
       }
   }
-  }
 
   /**
    * @param string $id