Add form nonce to custom form code

templates/forms/form.html.twig

@@ -15,4 +15,7 @@
 	    <button class="button" type="{{ button.type|default('submit') }}">{{ button.value|default('Submit') }}</button>
 	{% endfor %}
 	</div>
+	
+	{{ nonce_field('form', 'form-nonce') }}
+
 </form>