diff --git a/erpnext/buying/desk_page/buying/buying.json b/erpnext/buying/desk_page/buying/buying.json
index e00db0e..1a69f42 100644
--- a/erpnext/buying/desk_page/buying/buying.json
+++ b/erpnext/buying/desk_page/buying/buying.json
@@ -40,8 +40,8 @@
  "category": "Modules",
  "charts": [
   {
-   "chart_name": "Purchase Analytics",
-   "label": "Buying Analytics"
+   "chart_name": "Purchase Order Trends",
+   "label": "Purchase Order Trends"
   }
  ],
  "charts_label": "Buying Dashboard",
@@ -54,7 +54,7 @@
  "idx": 0,
  "is_standard": 1,
  "label": "Buying",
- "modified": "2020-05-15 14:26:42.505702",
+ "modified": "2020-05-15 23:41:09.307288",
  "modified_by": "Administrator",
  "module": "Buying",
  "name": "Buying",
diff --git a/erpnext/buying/module_onboarding/buying/buying.json b/erpnext/buying/module_onboarding/buying/buying.json
index fc956ba..70d6cbb 100644
--- a/erpnext/buying/module_onboarding/buying/buying.json
+++ b/erpnext/buying/module_onboarding/buying/buying.json
@@ -19,7 +19,7 @@
  "documentation_url": "https://docs.erpnext.com/docs/user/manual/en/buying",
  "idx": 0,
  "is_complete": 0,
- "modified": "2020-05-15 14:39:16.514904",
+ "modified": "2020-05-15 23:42:35.625736",
  "modified_by": "Administrator",
  "module": "Buying",
  "name": "Buying",
diff --git a/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py b/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py
index 497ce68..89be622 100644
--- a/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py
+++ b/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py
@@ -19,7 +19,7 @@
 	data = get_data(conditions, filters)
 
 	if not data:
-		return [], []
+		return [], [], None, []
 
 	data, chart_data = prepare_data(data, filters)