From fd89b288e5082f3d1b6085c3e96f58deeccf4eff Mon Sep 17 00:00:00 2001
From: Jannat Patel <pateljannat2308@gmail.com>
Date: Tue, 4 Oct 2022 18:11:55 +0530
Subject: [PATCH] fix: username validation

---
 lms/overrides/user.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lms/overrides/user.py b/lms/overrides/user.py
index 7273077d..dfa97cf4 100644
--- a/lms/overrides/user.py
+++ b/lms/overrides/user.py
@@ -24,7 +24,7 @@ class CustomUser(User):
 
 
     def validate_username_characters(self):
-        if len(self.username):
+        if self.username and len(self.username):
             other_conditions = self.username[0] == "_" or self.username[-1] == "_" or "-" in self.username
         else:
             other_conditions = ''