Fixed issue where no Holidays would cause the report to break

erpnext/hr/report/employee_holiday_attendance/employee_holiday_attendance.py

@@ -33,7 +33,7 @@ def get_employees():
 	for holiday in holidays:
 		holidays_list.append(holiday.holiday_date)
 		holiday_names[holiday.holiday_date] = holiday.description
-
+	if(holidays_list):
 		employee_list = frappe.db.sql("""select
 		        employee, employee_name, att_date, status
 		    from tabAttendance
@@ -45,3 +45,5 @@ def get_employees():
 			employee_data.append(holiday_names[employee_data[2]])
 
 		return employee_list
+	else:
+		return None