diff --git a/app/controllers/my_modules_controller.rb b/app/controllers/my_modules_controller.rb
index f2ac67a1c..4549e9a13 100644
--- a/app/controllers/my_modules_controller.rb
+++ b/app/controllers/my_modules_controller.rb
@@ -348,7 +348,7 @@ class MyModulesController < ApplicationController
 
     render json: protocol, serializer: ProtocolSerializer, user: current_user
   rescue ActiveRecord::RecordInvalid
-    head :unprocessable_entity
+    render json: protocol.errors, status: :unprocessable_entity
   end
 
   def results
diff --git a/app/javascript/packs/tiny_mce.js b/app/javascript/packs/tiny_mce.js
index ed99c76cd..dbf1300a7 100644
--- a/app/javascript/packs/tiny_mce.js
+++ b/app/javascript/packs/tiny_mce.js
@@ -343,6 +343,8 @@ window.TinyMCE = (() => {
                 editor.setProgressState(0);
                 if (data.status === 403) {
                   HelperModule.flashAlertMsg(I18n.t('general.no_permissions'), 'danger');
+                } else if (data.status === 422) {
+                  HelperModule.flashAlertMsg(data.responseJSON ? Object.values(data.responseJSON).join(', ') : I18n.t('errors.general'), 'danger');
                 }
               });