Fix missing form attr

Author: Roman Gsponer

assets/formblock.js

@@ -79,7 +79,11 @@ export function FormBlock(config, formElement) {
             if (fieldElement !== null) {
                 fieldElement.dataset.valid = field.is_valid;
                 fieldElement.querySelector('[aria-describedby]')?.toggleAttribute('invalid', !field.is_valid);
-                fieldElement.querySelector('[data-form="fields_error"]')?.outerHTML = field.message;
+                
+                let errorfield = fieldElement.querySelector('[data-form="fields_error"]');
+                if (errorfield) {
+                    errorfield.outerHTML = field.message;
+                }
             }
 
         });

composer.json

@@ -2,7 +2,7 @@
     "name": "microman/kirby-form-block-suite",
     "description": "Contactform based on Kirby blocks.",
     "type": "kirby-plugin",
-    "version": "4.3.4",
+    "version": "4.3.5",
     "license": "proprietary",
     "authors": [{
         "name": "Roman Gsponer",