Hue Server Error(500)

We have ' Server Error(500)' issue in Hue after upgrading from cdh4.7 to 5.1.

The solution is to reinstall Hue.

1. Stop Hue

2. Backup desktop.db (mv /var/lib/hue/desktop.db /to_somewhere_safe/desktop.db.orig)

3. Delete Hue

4. Add Hue

5. Start Hue

6. Test Hue and Hive Queries