`flet build` creates bundle but running it gives `ImportError: No module named main` error

[OmarBelfeki]

Duplicate Check

• I have searched the opened issues and there are no duplicates

Describe the bug

Traceback (most recent call last):
File "", line 47, in
File "", line 222, in run_module
File "", line 142, in _get_module_details
ImportError: No module named main

Code sample

Code

print(error)

To reproduce

...

Expected behavior

No response

Screenshots / Videos

Captures

Operating System

Windows

Operating system details

11

Flet version

0.25

Regression

No, it isn't

Suggestions

No response

Logs

Logs

[Paste your logs here]

Additional details

No response

[FeodorFitsner]

What do you have in pyproject.toml and what is the file structure of your project?

[OmarBelfeki]

pyproject.toml

[project]
name = "weather-app"
version = "0.1.0"
description = ""
readme = "README.md"
requires-python = ">=3.8"
dependencies = [
  "flet"
]

[tool.flet]
# org name in reverse domain name notation, e.g. "com.mycompany".
# Combined with project.name to build bundle ID for iOS and Android apps
org = "com.mycompany"

# project display name that is used as an app title on Android and iOS home screens,
# shown in window titles and about app dialogs on desktop.
product = "Weather Forcast"

# company name to display in about app dialogs
company = "Flet"

# copyright text to display in about app dialogs
copyright = "Copyright (C) 2024 by Flet"

[tool.flet.app]
path = "src"

Structure

W:\dev-mobile\dev mobile (flet)\api-app\weather-app>flet build apk
[09:17:25] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref 0.25.0 ✅
           Customized app icons and splash images ✅
[09:18:41] Generated app icons ✅
[09:18:51] Generated splash screens ✅
[09:21:48] Packaged Python app ✅
[09:30:39] Built .apk for Android ✅
           Copied build to build\apk directory ✅
           Successfully built your .apk for Android! 🥳 Find it in build\apk directory. 📁

[N0Works]

I'm having the same problem.
I created a basic project and built it right away, and it runs fine with flet run, but I get an error after building.

win11, 0.25.0

Commands used

mkdir flet-test
cd flet-test
flet create .
flet run
flet build windows -vv
cd flet build/windows
flet-test.exe

Error Description

Traceback (most recent call last):
  File "<string>", line 47, in <module>
  File "<frozen runpy>", line 222, in run_module
  File "<frozen runpy>", line 142, in _get_module_details
ImportError: No module named main

I filmed a video of the process.

flet2.mp4

The terminal log is here.
ps-log.txt

Also, apps written with existing FLETs are experiencing the same error after updating from 0.24.1 to 0.25.0.

[FeodorFitsner]

Thanks for the additional details. I'm on it.

[OmarBelfeki]

++ when i run 'flet run main.py --android' is not working too on my phone (app flet)

[FeodorFitsner]

++ when i run 'flet run main.py --android' is not working too on my phone (app flet)

that's a different issue.