fix: minor issue

(cherry picked from commit b60c57a)

erpnext/accounts/report/accounts_receivable/accounts_receivable.py

@@ -841,7 +841,11 @@ def add_customer_filters(
 
 		if self.filters.get("customer_group"):
 			groups = get_customer_group_with_children(self.filters.customer_group)
-			customers = qb.from_(self.customer).select(self.customer.name).where(self.customer['customer_group'].isin(groups))
+			customers = (
+				qb.from_(self.customer)
+				.select(self.customer.name)
+				.where(self.customer["customer_group"].isin(groups))
+			)
 			self.qb_selection_filter.append(self.ple.party.isin(customers))
 
 		if self.filters.get("territory"):
@@ -1135,6 +1139,7 @@ def get_exchange_rate_revaluations(self):
 		)
 		self.err_journals = [x[0] for x in results] if results else []
 
+
 def get_customer_group_with_children(customer_groups):
 	if not isinstance(customer_groups, list):
 		customer_groups = [d.strip() for d in customer_groups.strip().split(",") if d]