class is mistaken for a module? (invalid-annotation)

[IIHERO4]

pytype version: 2022.02.17 Ran on WSL2 ubuntu CMD: /usr/bin/python3 -m pytype.single --imports_info /tmp/tmpsak_oti3/imports/hydra.core.player.imports --module-name hydra.core.player -V 3.8 -o /tmp/tmpsak_oti3/pyi/hydra/core/player.pyi --analyze-annotated --nofail --quick /mnt/c/Users/alias/Desktop/src/hydra/hydra/core/player.py

I get this error when trying to type check player.py

File "/mnt/c/Users/alias/Desktop/src/hydra/hydra/core/player.py", line 17, in BasePlayer: Invalid type annotation '<instance of module>' for provider [invalid-annotation]
  Not a type

For more details, see https://google.github.io/pytype/errors.html#invalid-annotation

Player.py

from typing import TYPE_CHECKING, Union

from .packets import State

if TYPE_CHECKING:
    from .helpers.stream import Stream
    from .server import Server


class BasePlayer:

    __slots__ = ("name", "connection", "state", "provider")

    def __init__(self, stream: "Stream", provider: Union["Server"]):  # this is line 17
    ...

server.py

...

class Server:
...

the project structure

...
├── player.py
└── server
    ├── __init__.py
    ├── events.py
    ├── server.py
    └── server_event_listener.py

Note im 100% sure its Server class thats being imported as python itself imports Server class if outside TYPE_CHECKING clause

ALSO i know that union should include two types, but i just slapped a Union because ill add more types later in the project development + i tried adding another type Union[Server, int] still same error. I also tried removing the "" still same error.

Its clearly sees Server as a module, idk but my guess is case in-senstive?

[IIHERO4]

also this is the __init__.py

from .server import Server

i think the issue is from here because .server.server.Server is accessed by .server.Server

[IIHERO4]

Also generates issues like this

/usr/bin/python3 -m pytype.single --imports_info /tmp/tmpdlc5ymkb/imports/hydra.core.server.server.imports --module-name hydra.core.server.server -V 3.8 -o /tmp/tmpdlc5ymkb/pyi/hydra/core/server/server.pyi --analyze-annotated --nofail --quick /mnt/c/Users/alias/Desktop/src/hydra/hydra/core/server/server.py
File "/mnt/c/Users/alias/Desktop/src/hydra/hydra/core/server/server.py", line 70, in start: Function ServerStartEvent.__init__ was called with the wrong arguments [wrong-arg-types]
         Expected: (self, server: hydra.core.server.server.Server)
  Actually passed: (self, server: Server)

For more details, see https://google.github.io/pytype/errors.html#wrong-arg-types

where this

if TYPE_CHECKING:
    from .server import Server


class ServerStartEvent(Cancellable):
    """Event called when the server side starts up"""

    __slots__ = ("server",)

    def __init__(self, server: "Server"):  ...

this line is generating the error:

# somewhere inside the Server class 
        start_event = ServerStartEvent(self)  # the Error