Why Have a Blank Screen When Selecting Category

This problem is happening because we do not have a default category for the store view.

  1. Go to Magento Backend > POS > Manage Location > open 1 location

  2. Link your primary location to a store view

  3. Edit the above Store View and Set Root Category for this Store View

  4. Remember to enable that Category if it is Root Category

Link your primary location to a store view
Edit the Store View
Set Root Category for this Store View
Enable that Category if it is Root Category