diff --git a/erpnext/accounts/doctype/payment_request/payment_request.py b/erpnext/accounts/doctype/payment_request/payment_request.py
index a0efac5..a4f8232 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/payment_request.py
@@ -37,10 +37,11 @@
 		self.make_communication_entry()
 		ref_doc = frappe.get_doc(self.reference_doctype, self.reference_name)
 
-		if hasattr(ref_doc, "order_type") and getattr(ref_doc, "order_type") == "Shopping Cart":
+		if (hasattr(ref_doc, "order_type") and getattr(ref_doc, "order_type") == "Shopping Cart") \
+			or self.flags.mute_email:
 			send_mail = False
 
-		if send_mail and not self.flags.mute_email:
+		if send_mail:
 			self.set_payment_request_url()
 			self.send_email()
 
@@ -50,7 +51,7 @@
 
 	def make_invoice(self):
 		ref_doc = frappe.get_doc(self.reference_doctype, self.reference_name)
-		if hasattr(ref_doc, "order_type") and getattr(ref_doc, "order_type") == "Shopping Cart":
+		if (hasattr(ref_doc, "order_type") and getattr(ref_doc, "order_type") == "Shopping Cart"):
 			from erpnext.selling.doctype.sales_order.sales_order import make_sales_invoice
 			si = make_sales_invoice(self.reference_name, ignore_permissions=True)
 			si = si.insert(ignore_permissions=True)
@@ -216,12 +217,9 @@
 	"""Make payment request"""
 
 	args = frappe._dict(args)
-
 	ref_doc = frappe.get_doc(args.dt, args.dn)
-
-	gateway_account = get_gateway_details(args) or frappe._dict()
-
 	grand_total = get_amount(ref_doc, args.dt)
+	gateway_account = get_gateway_details(args) or frappe._dict()
 
 	existing_payment_request = frappe.db.get_value("Payment Request",
 		{"reference_doctype": args.dt, "reference_name": args.dn, "docstatus": ["!=", 2]})
@@ -244,22 +242,19 @@
 			"reference_name": args.dn
 		})
 
-		if args.return_doc:
-			return pr
-
-		if args.mute_email:
+		if args.order_type == "Shopping Cart" or args.mute_email:
 			pr.flags.mute_email = True
 
 		if args.submit_doc:
 			pr.insert(ignore_permissions=True)
 			pr.submit()
 
-	if hasattr(ref_doc, "order_type") and getattr(ref_doc, "order_type") == "Shopping Cart":
+	if args.order_type == "Shopping Cart":
 		frappe.db.commit()
 		frappe.local.response["type"] = "redirect"
 		frappe.local.response["location"] = pr.get_payment_url()
 
-	if not args.cart:
+	if args.return_doc:
 		return pr
 
 	return pr.as_dict()
diff --git a/erpnext/accounts/doctype/payment_request/test_payment_request.py b/erpnext/accounts/doctype/payment_request/test_payment_request.py
index 06231eb..8d43950 100644
--- a/erpnext/accounts/doctype/payment_request/test_payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/test_payment_request.py
@@ -70,7 +70,7 @@
 		
 		so_inr = make_sales_order(currency="INR")
 		pr = make_payment_request(dt="Sales Order", dn=so_inr.name, recipient_id="saurabh@erpnext.com",
-			mute_email=1, submit_doc=1)
+			mute_email=1, submit_doc=1, return_doc=1)
 		pe = pr.set_as_paid()
 
 		so_inr = frappe.get_doc("Sales Order", so_inr.name)
@@ -81,7 +81,7 @@
 			currency="USD", conversion_rate=50)
 
 		pr = make_payment_request(dt="Sales Invoice", dn=si_usd.name, recipient_id="saurabh@erpnext.com",
-			mute_email=1, payment_gateway="_Test Gateway - USD", submit_doc=1)
+			mute_email=1, payment_gateway="_Test Gateway - USD", submit_doc=1, return_doc=1)
 		
 		pe = pr.set_as_paid()
 		
diff --git a/erpnext/shopping_cart/product.py b/erpnext/shopping_cart/product.py
index 912467f..0d6eccd 100644
--- a/erpnext/shopping_cart/product.py
+++ b/erpnext/shopping_cart/product.py
@@ -46,6 +46,7 @@
 	}
 
 def get_qty_in_stock(item_code, template_item_code):
+	in_stock, stock_qty = 0, ''
 	warehouse = frappe.db.get_value("Item", item_code, "website_warehouse")
 	if not warehouse and template_item_code and template_item_code != item_code:
 		warehouse = frappe.db.get_value("Item", template_item_code, "website_warehouse")
@@ -55,8 +56,6 @@
 			item_code=%s and warehouse=%s""", (item_code, warehouse))
 		if stock_qty:
 			in_stock = stock_qty[0][0] > 0 and 1 or 0
-		else:
-			in_stock = 0
 
 	return frappe._dict({"in_stock": in_stock, "stock_qty": stock_qty})
 
diff --git a/erpnext/templates/pages/order.html b/erpnext/templates/pages/order.html
index 3e4eca3..2481808 100644
--- a/erpnext/templates/pages/order.html
+++ b/erpnext/templates/pages/order.html
@@ -79,7 +79,7 @@
 				or (doc.doctype=="Sales Invoice" and doc.outstanding_amount > 0) %}
 			<div class="page-header-actions-block" data-html-block="header-actions">
 				<p>
-				    <a href="/api/method/erpnext.accounts.doctype.payment_request.payment_request.make_payment_request?dn={{ doc.name }}&dt={{ doc.doctype }}&submit_doc=1"
+				    <a href="/api/method/erpnext.accounts.doctype.payment_request.payment_request.make_payment_request?dn={{ doc.name }}&dt={{ doc.doctype }}&submit_doc=1&order_type=Shopping Cart"
 				        class="btn btn-primary btn-sm">{{ _("Pay") }} {{ doc.get_formatted("grand_total") }} </a>
 				</p>
 			</div>