Create a new item on Material Request showing error Item None not found. #20608 (#20731)

diff --git a/erpnext/stock/doctype/material_request/material_request.js b/erpnext/stock/doctype/material_request/material_request.js
index 7ef2d64..6b26d38 100644
--- a/erpnext/stock/doctype/material_request/material_request.js
+++ b/erpnext/stock/doctype/material_request/material_request.js
@@ -145,6 +145,7 @@
 	},
 
 	get_item_data: function(frm, item) {
+		if (!item.item_code) return;
 		frm.call({
 			method: "erpnext.stock.get_item_details.get_item_details",
 			child: item,