fix: Fetch base_net_total for each Invoice
diff --git a/erpnext/accounts/report/gross_profit/gross_profit.py b/erpnext/accounts/report/gross_profit/gross_profit.py
index 1a84138..e2fb49e 100644
--- a/erpnext/accounts/report/gross_profit/gross_profit.py
+++ b/erpnext/accounts/report/gross_profit/gross_profit.py
@@ -428,7 +428,7 @@
 					'item_row': None, 
 					'is_return': row.is_return, 
 					'cost_center': row.cost_center,
-					'base_net_amount': 0,
+					'base_net_amount': frappe.db.get_value('Sales Invoice', row.parent, 'base_net_total'),
 					'base_rate': None
 				})