Catch VerifyException

jupyterhub_authenticator/password.py

@@ -27,6 +27,6 @@ def checkpw(password, encrypted_password):
 
     try:
         return argon2.PasswordHasher().verify(encrypted_password, password)
-    except argon2.exceptions.InvalidHashError:
+    except argon2.exceptions.InvalidHashError, argon2.exceptions.VerifyMismatchError:
         # Rewrite exception to maintain API compatibility.
         return False