Slava

@jettify, I'm currently perfectly fine with minimalistic `ng-admin`, but `admin-on-rest` looks prettier on the video. I think i'd give it a try if it worked out of the box.

While i believe https://github.com/pydantic/pydantic/issues/4146#issuecomment-1156371670 is answered in https://github.com/pydantic/pydantic/issues/2314#issuecomment-772285980, I'd love to bump the original issue with a slightly reduced example. Output of `python -c "import pydantic.utils; print(pydantic.utils.version_info())"`: ``` pydantic version:...

A slightly more reduced example would be: ```py from pydantic import generics generics.replace_types(list[str] | None, {str: int}) ``` I guess the problem is that `type(list | int)` is `types.UnionType` and...

> I can reproduce it on Mac and windows with Python 3.9 > PEP604-syntax requires python>=3.10

This also results in aiohttp_admin's exceptions during passing validation errors to frontend in util.py and mongo_utils.py (lines with `**exc.as_dict()`)