SyncMadeEasy/force-app/main/default/classes/UpdateDraftOrderFromShopifyAuth.cls

@RestResource(urlMapping='/UpdateDraftOrderFromShopifyAuth/*')
global with sharing class UpdateDraftOrderFromShopifyAuth {    
    @HttpPost
    global static void UpdateDraftOrderFromShopifyAuth(){     
        //Deprecated
       //Class no longer exists           
    }  
}