A workaround for the POS module in Odoo that causes the error to occur (the document you are trying to access has been deleted) due to deletion of partner

In the Model.js file

Push_order:function(order) {varSelf = This; if(order) { This. Proxy.log (' Push_order ', Order.export_as_json ());  This. Db.add_order (Order.export_as_json ()); }                        varpushed =New $.            Deferred ();  This. Flush_mutex.exec (function(){                varflushed =self._flush_orders (self.db.                 Get_orders ()); Flushed.always (function(IDs) {pushed.resolve ();            });            }); returnpushed; },

Change the flag red method to the Remove_all_orders () method in the Db.js file , first clear the wrong order list, and then change back to the original get_orders () method is good

This error occurs because there is an unknown user's order in the order list, so you need to clear these orders.

A workaround for the POS module in Odoo that causes the error to occur (the document you are trying to access has been deleted) due to deletion of partner