Input validation not working as expected

[Sreerag-ibtl]

Describe the bug
Input validation fails in a fairly simple scenario. Given the input and schema below, the validator cannot identify the violation.

validate({"my_input": None}, {"my_input": {"type": str, "required": True}})

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
It should report the violation correctly.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Ubuntu
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
My Python version is 3.11.