POS Error after upgrading from v12 to v13

Hi, i upgraded erpnext v12 to v13, after that i am getting following error while adding items to cart.

TypeError: get_stock_availability() missing 1 required positional argument: ‘warehouse’

Did you check POS profile and set the warehouse?

yes i see warehouse field is mandatory in v13 pos profile, it works when i set warehouse.

@Muzzy also do you have any idea why custom modules are not showing in left sidebar?