Please help me in changing the status of orders from Pending to Complete. I'm using Opencart v2.3.0.2.
My customers have successfully checked out the products without any problems with shipping method.
When it is time for me to change the status a problem occurred.
In the "5. Totals" tab, I get an error "Warning: No Shipping options are available!" even though the shipping method is selected.
Check image below.
http://prntscr.com/hgcgqy
Your help is very much appreciated.
Thank you very much.