fix status event_notification enum adding 'sending'

server/api/models/eventnotification.js

@@ -6,7 +6,7 @@ class EventNotification extends Model {}
 EventNotification.init({
   status: {
     type: DataTypes.ENUM,
-    values: ['new', 'sent', 'error'],
+    values: ['new', 'sent', 'error', 'sending'],
     defaultValue: 'new',
     index: true
   }

server/migrations/20210308194339-sending_notification_status.js

@@ -0,0 +1,10 @@
+'use strict'
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.sequelize.query('ALTER TYPE "enum_event_notifications_status" ADD VALUE \'sending\'')
+  },
+
+  down: (queryInterface, Sequelize) => {
+  }
+}