When I try to install, update or delete a plugin I keep running into that error. Can someone please help me?
This usually happens when your DB schema (tables, columns etc.) is out of sync with the migrations of a plugin (Rainlab Location in this case), most often caused by copying the DB tables to a fresh installation.
In this case, with the Rainlab Location plugin, it is safe to delete the rainlab_location_* tables an run php artisan october:migrate. Your problem should the be fixed.
But you should nonetheless create a backup of your DB first, just in case 