diff --git a/src/models/creation/CreateUser.ts b/src/models/creation/CreateUser.ts
index b024e4c..1182519 100644
--- a/src/models/creation/CreateUser.ts
+++ b/src/models/creation/CreateUser.ts
@@ -42,14 +42,16 @@ export class CreateUser {
             }
             let found_groups = []
             this.groupId.forEach(async (g) => {
-                const foundGroup = await getConnectionManager().get().getRepository(UserGroup).find({ id: g });
-                if (foundGroup) {
-                    found_groups.push(foundGroup)
-                } else {
-                    throw new UserGroupNotFoundError();
-                }
+                const foundGroup = await getConnectionManager().get().getRepository(UserGroup).findOne({ id: g });
+                console.log(foundGroup);
+                found_groups.push(foundGroup)
             });
-            newUser.groups = found_groups
+            console.log(found_groups);
+            if (found_groups.includes(undefined) || found_groups.includes(null)) {
+                throw new UserGroupNotFoundError();
+            } else {
+                newUser.groups = found_groups
+            }
         }
 
         const new_uuid = uuid.v4()