Pyinstaller-compiled Uvicorn server does not start correctly

When I start the server.exe and it is trying to perform uvicorn.run(), the exception is being thrown:

Traceback (most recent call last):
  File "logging\config.py", line 390, in resolve
ModuleNotFoundError: No module named 'uvicorn.logging'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "logging\config.py", line 542, in configure
  File "logging\config.py", line 654, in configure_formatter
  File "logging\config.py", line 469, in configure_custom
  File "logging\config.py", line 397, in resolve
  File "logging\config.py", line 390, in resolve
ValueError: Cannot resolve 'uvicorn.logging.DefaultFormatter': No module named 'uvicorn.logging'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "server.py", line 82, in <module>
  File "server.py", line 21, in run
  File "uvicorn\main.py", line 343, in run
  File "uvicorn\config.py", line 180, in __init__
  File "uvicorn\config.py", line 223, in configure_logging
  File "logging\config.py", line 808, in dictConfig
  File "logging\config.py", line 545, in configure
ValueError: Unable to configure formatter 'default'
[7932] Failed to execute script server

Note that the uvicorn.logging module does exist and when I perform the server`s code in Python, it operates correctly.

Solution

I encountered the same problem. And I found it's a job of hiddenimports,It's useful to modify the following lines in xxx.spec:

a = Analysis(['xxx.py'], 
             hiddenimports=['uvicorn.logging'], 
             <everything else>)

however, there will still be other similar problems. So, I try to add all files of uvicorn,and it works with:

hiddenimports=['uvicorn.lifespan.off','uvicorn.lifespan.on','uvicorn.lifespan',
'uvicorn.protocols.websockets.auto','uvicorn.protocols.websockets.wsproto_impl',
'uvicorn.protocols.websockets_impl','uvicorn.protocols.http.auto',
'uvicorn.protocols.http.h11_impl','uvicorn.protocols.http.httptools_impl',
'uvicorn.protocols.websockets','uvicorn.protocols.http','uvicorn.protocols',
'uvicorn.loops.auto','uvicorn.loops.asyncio','uvicorn.loops.uvloop','uvicorn.loops',
'uvicorn.logging'],

then, run:

pyinstaller xxx.spec