fix: import `frappe._` in lms.py
diff --git a/erpnext/www/lms.py b/erpnext/www/lms.py
index a945361..7561d73 100644
--- a/erpnext/www/lms.py
+++ b/erpnext/www/lms.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 import erpnext.education.utils as utils
 import frappe
+from frappe import _
 
 # LMS Utils to Update State for Vue Store
 @frappe.whitelist()