flet builds my ipa but I get this error after the splash screen on iPhone

[marc-svg]

Hello,
with this example (and all others):

import flet as ft

def main(page: ft.Page):
    page.add(ft.SafeArea(ft.Text("Hello, Flet!")))

ft.app(target=main, assets_dir="assets")

flet build ipa works fine
But when I start the app on iOS (iPhone) I get this error after the splash screen (after the flet icon):

Traceback (most recent call last):
  File "<string>", line 43, in <module>
  File "<frozen runpy>", line 229, in run_module
  File "<frozen runpy>", line 88, in _run_code
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/main.py", line 1, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet/__init__.py", line 1, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet_runtime/__init__.py", line 1, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet_core/__init__.py", line 1, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet_core/audio.py", line 4, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet_core/control.py", line 11, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet_core/utils/__init__.py", line 1, in <module>
  File "/var/folders/1b/pmdh6fxx4514vl_t0n8ct1w80000gn/T/serious_python_temptAhijw/__pypackages__/flet_core/utils/concurrency_utils.py", line 1, in <module>
  File "./asyncio/__init__.py", line 8, in <module>
  File "./asyncio/base_events.py", line 25, in <module>
  File "/Users/appveyor/projects/serious-python/dist/root/python3/lib/python3.11/subprocess.py", line 104, in <module>
ModuleNotFoundError: No module named '_posixsubprocess'

Should I continue to look for a pb on my side (it worked up to march, I have a running ipa from beginning of march that still works), or is there a pb on the flet side (serious-python since march) ?

macOS sillicon
Flutter 3.22.21
flet 0.22.1
python 3.11.9

Thanks for information

[marc-svg]

Hello,
Same issue with new flet version.
Can someone tell me if he succeeds building a running ipa please ?

Thank you.

[FeodorFitsner]

It would be great to look inside the IPA produced and see if site-packages contains _posixsubprocess.py?

[marc-svg]

Thank you for your rapid answer.
Module not present.
If this is the pb I should be able to find a solution.

Thank

[FeodorFitsner]

Can you provide a full log of flet build command with -vv option (remove any sensitive info from the log)?

[marc-svg]

I joined the result of build -vv
build-vv.txt

[marc-svg]

Hello,
I still have a running ipa from march.
I opened it and in the serious_python_darwin.framework/..../ site-packages the only present file is ->_posixsubprocess.pyc
For the not running ipa (since march) this folder is empty (excepted a README.txt).

Best regards

[marc-svg]

Hello,
I build again this evening and now its ok.

Thank you !