diff --git a/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py b/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py
index abc6eba..11dcfe7 100644
--- a/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py
+++ b/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py
@@ -74,6 +74,9 @@
 		clearance_date_updated = False
 		for d in self.get('payment_entries'):
 			if d.clearance_date:
+				if not d.payment_document:
+					frappe.throw(_("Row #{0}: Payment document is required to complete the trasaction"))
+
 				if d.cheque_date and getdate(d.clearance_date) < getdate(d.cheque_date):
 					frappe.throw(_("Row #{0}: Clearance date {1} cannot be before Cheque Date {2}")
 						.format(d.idx, d.clearance_date, d.cheque_date))
diff --git a/erpnext/accounts/report/profitability_analysis/profitability_analysis.py b/erpnext/accounts/report/profitability_analysis/profitability_analysis.py
index 4f9fd15..6d95237 100644
--- a/erpnext/accounts/report/profitability_analysis/profitability_analysis.py
+++ b/erpnext/accounts/report/profitability_analysis/profitability_analysis.py
@@ -11,9 +11,11 @@
 value_fields = ("income", "expense", "gross_profit_loss")
 
 def execute(filters=None):
+	if not filters.get('based_on'): filters["based_on"] = 'Cost Center'
+
 	based_on = filters.based_on.replace(' ', '_').lower()
 	validate_filters(filters)
-	accounts = get_accounts_data(based_on, filters.company)
+	accounts = get_accounts_data(based_on, filters.get("company"))
 	data = get_data(accounts, filters, based_on)
 	columns = get_columns(filters)
 	return columns, data
@@ -27,14 +29,14 @@
 
 def get_data(accounts, filters, based_on):
 	if not accounts:
-		return None
+		return []
 
 	accounts, accounts_by_name, parent_children_map = filter_accounts(accounts)
 
 	gl_entries_by_account = {}
 
-	set_gl_entries_by_account(filters.company, filters.from_date,
-		filters.to_date, based_on, gl_entries_by_account, ignore_closing_entries=not flt(filters.with_period_closing_entry))
+	set_gl_entries_by_account(filters.get("company"), filters.get("from_date"),
+		filters.get("to_date"), based_on, gl_entries_by_account, ignore_closing_entries=not flt(filters.get("with_period_closing_entry")))
 
 	total_row = calculate_values(accounts, gl_entries_by_account, filters)
 	accumulate_values_into_parents(accounts, accounts_by_name)
@@ -90,7 +92,7 @@
 
 def prepare_data(accounts, filters, total_row, parent_children_map, based_on):
 	data = []
-	company_currency = frappe.db.get_value("Company", filters.company, "default_currency")
+	company_currency = frappe.db.get_value("Company", filters.get("company"), "default_currency")
 
 	for d in accounts:
 		has_value = False
@@ -99,7 +101,7 @@
 			"account": d.name,
 			"parent_account": d.parent_account,
 			"indent": d.indent,
-			"fiscal_year": filters.fiscal_year,
+			"fiscal_year": filters.get("fiscal_year"),
 			"currency": company_currency,
 			"based_on": based_on
 		}
@@ -122,9 +124,9 @@
 	return [
 		{
 			"fieldname": "account",
-			"label": _(filters.based_on),
+			"label": _(filters.get("based_on")),
 			"fieldtype": "Link",
-			"options": filters.based_on,
+			"options": filters.get("based_on"),
 			"width": 300
 		},
 		{
diff --git a/erpnext/config/learn.py b/erpnext/config/learn.py
index 426449b..86db808 100644
--- a/erpnext/config/learn.py
+++ b/erpnext/config/learn.py
@@ -44,7 +44,7 @@
 				},
 				{
 					"type": "help",
-					"label": _("Setting up Email"),
+					"label": _("Setting up Email Account"),
 					"youtube_id": "YFYe0DrB95o"
 				},
 				{
@@ -64,11 +64,6 @@
 				},
 				{
 					"type": "help",
-					"label": _("Email Account"),
-					"youtube_id": "YFYe0DrB95o"
-				},
-				{
-					"type": "help",
 					"label": _("File Manager"),
 					"youtube_id": "4-osLW3E_Rk"
 				},