diff --git a/docs/v3.x/plugins/email.md b/docs/v3.x/plugins/email.md
index 37920ead61..ae9932dc2f 100644
--- a/docs/v3.x/plugins/email.md
+++ b/docs/v3.x/plugins/email.md
@@ -44,7 +44,7 @@ const emailTemplate = {
     Your account is now linked with: <%= user.email %>.`,
   html: `<h1>Welcome on mywebsite.fr!</h1>
     <p>Your account is now linked with: <%= user.email %>.<p>`,
-},
+};
 
 await strapi.plugins.email.services.email.sendTemplatedEmail(
   {
diff --git a/packages/strapi-plugin-graphql/services/build-aggregation.js b/packages/strapi-plugin-graphql/services/build-aggregation.js
index d7fee20eb7..1314f58164 100644
--- a/packages/strapi-plugin-graphql/services/build-aggregation.js
+++ b/packages/strapi-plugin-graphql/services/build-aggregation.js
@@ -212,7 +212,7 @@ const createAggregationFieldsResolver = function(model, fields, operation, typeC
  * Correctly format the data returned by the group by
  */
 const preProcessGroupByData = function({ result, fieldKey, filters }) {
-  const _result = _.toArray(result);
+  const _result = _.toArray(result).filter(value => Boolean(value._id));
   return _.map(_result, value => {
     return {
       key: value._id.toString(),