# Help to others when installing DF in a VPS, problems & solutions **URL:** \ **Category:** GitHub Installers\ **Tags:** community\ **Created:** [June 1, 2017, 4:49pm UTC](https://community.dreamfactory.com/t/help-to-others-when-installing-df-in-a-vps-problems-solutions/3863 "2017-06-01T16:49:18Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![LBat](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.dreamfactory.com/lbat/32/1004_2.png) [@LBat](https://community.dreamfactory.com/u/LBat)\ **Post date:** [June 2, 2017, 2:29pm UTC](https://community.dreamfactory.com/t/help-to-others-when-installing-df-in-a-vps-problems-solutions/3863/2 "2017-06-02T14:29:19Z")
On another installation l get a blank page and on the browser console something like “`../api/v2/system/environment`” 400 error… (get also 404, 500, etc) Then copy this “`../api/v2/system/environment`” and put in Postman app and get in the message “`Unknown relationship: app_lookup_by_app_id`” ! The problem is related with table engine, is set to **MyISAM** and need to be **InnoDB**! I have to change server default mysql engine to InnoDB, then remove all tables in the database, make a new tables installation (`php artisan migrate --seed`), new df setup (`php artisan df:setup`) to create the Admin user, clear the cache (`php artisan cache:clear`) and then all works! Regards, LBat --- _[View the full topic](https://community.dreamfactory.com/t/help-to-others-when-installing-df-in-a-vps-problems-solutions/3863)._