data not filled in acc. receivable report for some field fix (#14546)

erpnext/accounts/report/accounts_receivable/accounts_receivable.py

@@ -60,6 +60,7 @@ class ReceivablePayableReport(object):
 		for label in ("Invoiced Amount", "Paid Amount", credit_or_debit_note, "Outstanding Amount"):
 			columns.append({
 				"label": label,
+				"fieldname": frappe.scrub(label),
 				"fieldtype": "Currency",
 				"options": "currency",
 				"width": 120