Bug Report for https://neetcode.io/problems/lowest-common-ancestor-in-binary-search-tree

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

I think this solution is not optimal but this should also be accepted but getting below error

Traceback (most recent call last):
File "/box/script.py", line 84, in
raise TypeError(f"Your output was {outputNode}, but the expected return type is TreeNode")
TypeError: Your output was None, but the expected return type is TreeNode

if root is None or root == p or root == q:
return root

    left = self.lowestCommonAncestor(root.left, p, q)
    right = self.lowestCommonAncestor(root.right, p, q)

    if left and right:
        return root
    
    if left is not None:
        return left
    else:
        return right