add form_error_tpl <template>

wcs/forms/root.py

@@ -933,6 +933,13 @@ class FormPage(FormdefDirectoryBase, FormTemplateMixin):
         form.attrs['data-check-condition-url'] = (
             self.formdef.get_url(language=get_publisher().current_language) + 'check_condition'
         )
+        form.widgets.append(
+            HtmlWidget(
+                '''<template id="form_error_tpl">
+          <div id="form_error_fieldname" class="error"></div>
+          </template>'''
+            )
+        )
         return form
 
     def create_view_form(self, *args, **kwargs):