[translations] added bn, da-DK, es-PE, si

erpnext/hr/doctype/holiday_list/holiday_list.py

@@ -34,8 +34,8 @@ class HolidayList(Document):
 
 	def validate_days(self):
 		for day in self.get("holidays"):
-			if (self.weekly_off).upper() == (day.description).upper():
-				frappe.throw("Records alredy exist for mentioned weekly off")
+			if (self.weekly_off or "").upper() == (day.description or "").upper():
+				frappe.throw("Records already exist for mentioned weekly off")
 
 	def get_weekly_off_date_list(self, year_start_date, year_end_date):
 		from frappe.utils import getdate