Error on windows10 apk build from demo app ( Deletion failed, OS Error: Access is denied. )

[Buggist]

Duplicate Check

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

Describe the bug

Just trying to build the demo app created by command "flet create . " to apk, and it was failed.

Code sample

Code

import flet as ft


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


ft.app(main)

To reproduce

(312-flet023-test) C:\Users\kg\Desktop\fletty>flet build apk --verbose

[10:20:51] Flutter bootstrap directory: C:\Users\kg\AppData\Local\Temp\flet_flutter_build_bEl3t76syP
Additional Flutter dependencies:
{}
[10:20:54] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref 0.23.2 ✅
Copying C:\Users\kg\Desktop\fletty\assets\icon.ico to
C:\Users\kg\AppData\Local\Temp\flet_flutter_build_bEl3t76syP\images
Customized app icons and splash images ✅
Run subprocess: ['C:\Programming\flutter\bin\dart.BAT', 'run', 'flutter_launcher_icons']
( ● ) Generating app icons ⏳... Resolving dependencies in C:\Users\kg\AppData\Local\Temp\flet_flutter_build_bEl3t7( ● ) Generating app icons (4.5s) Downloading packages... ( ● ) Generating app icons ⏳... Got dependencies in C:\Users\kg\AppData\Local\Temp\flet_flutter_build_bEl3t76syP`.
( ● ) Generating app icons ⏳...
Built flutter_launcher_icons:flutter_launcher_icons.
( ● ) Generating app icons ⏳... ════════════════════════════════════════════
FLUTTER LAUNCHER ICONS (v0.13.1)
════════════════════════════════════════════

( ● ) Generating app icons ⏳... • Creating default icons Android
• Overwriting the default Android launcher icon with a new icon
( ●) Generating app icons ⏳... • Overwriting default iOS launcher icon with new icon
( ● ) Generating app icons ⏳... Creating Icons for Web...
( ●) Generating app icons ⏳... Creating Icons for Windows...
( ● ) Generating app icons ⏳... Creating Icons for MacOS...
( ● ) Generating app icons ⏳...
✓ Successfully generated launcher icons
[10:21:07] Generated app icons ✅
Run subprocess: ['C:\Programming\flutter\bin\dart.BAT', 'run', 'flutter_native_splash:create']
( ● ) Generating splash screens ⏳...
Built flutter_native_splash:create.
( ● ) Generating splash screens ⏳... [Android] Creating default splash images
( ● ) Generating splash screens ⏳... [Android] Creating dark mode splash images
[Android] Creating default android12splash images
[Android] Creating dark mode android12splash images
( ● ) Generating splash screens ⏳... [Android] Updating launch background(s) with splash image path...
[Android] - android/app/src/main/res/drawable/launch_background.xml
[Android] - android/app/src/main/res/drawable-night/launch_background.xml
[Android] - android/app/src/main/res/drawable-v21/launch_background.xml
[Android] - android/app/src/main/res/drawable-night-v21/launch_background.xml
[Android] Updating styles...
[Android] - android/app/src/main/res/values-v31/styles.xml
[Android] No android/app/src/main/res/values-v31/styles.xml found in your Android project
[Android] Creating android/app/src/main/res/values-v31/styles.xml and adding it to your Android project
[Android] - android/app/src/main/res/values-night-v31/styles.xml
[Android] No android/app/src/main/res/values-night-v31/styles.xml found in your Android project
[Android] Creating android/app/src/main/res/values-night-v31/styles.xml and adding it to your Android project
( ● ) Generating splash screens ⏳... [Android] - android/app/src/main/res/values/styles.xml
[Android] - android/app/src/main/res/values-night/styles.xml
[iOS] Creating images
[iOS] Creating dark mode images
[iOS] Updating ios/Runner/Info.plist for status bar hidden/visible
[Web] Creating images
[Web] Creating images
[Web] Creating background images
[Web] Creating CSS
( ● ) Generating splash screens ⏳... [Web] Updating index.html

✅ Native splash complete.
Now go finish building something awesome! 💪 You rock! 🤘🤩
Like the package? Please give it a 👍 here: https://pub.dev/packages/flutter_native_splash

[10:21:10] Generated splash screens ✅
Run subprocess: ['C:\Programming\flutter\bin\dart.BAT', 'run', 'serious_python:main', 'package',
'C:\Users\kg\Desktop\fletty', '--mobile', '--platform', 'mobile', '--dep-mappings', 'flet=flet-embed',
'--req-deps', 'flet-embed', '--exclude', 'build']
(● ) Packaging Python app ⏳...
Built serious_python:main.
(● ) Packaging Python app ⏳... Running package command
Creating asset directory: C:\Users\kg\AppData\Local\Temp\flet_flutter_build_bEl3t76syP\app
Copying Python app from C:\Users\kg\Desktop\fletty to C:\Users\kg\AppData\Local\Temp\serious_python_tempb5b5b217
( ●) Packaging Python app ⏳... Configured mobile platform with sitecustomize.py at C:\Users\kg\AppData\Local\Temp\serious_python_sitecustomizedf99ffbe\sitecustomize.py
Installing dependencies [flet-embed==0.22.*] with pip command to C:\Users\kg\AppData\Local\Temp\serious_python_tempb5b5b217_pypackages_
Extracting Python distributive from C:\Users\kg\AppData\Local\Temp\cpython-3.11.6+20231002-x86_64-pc-windows-msvc-shared-install_only.tar.gz to C:\Users\kg\AppData\Local\Temp\hostpython3.11_4586fc97
( ● ) Packaging Python app ⏳... Compiling Python sources at C:\Users\kg\AppData\Local\Temp\serious_python_tempb5b5b217
( ● ) Packaging Python app ⏳... Error: FormatException: Unexpected extension byte (at offset 3147)
Deleting temp directory C:\Users\kg\AppData\Local\Temp\serious_python_tempb5b5b217
( ● ) Packaging Python app ⏳... Deleting sitecustomize directory C:\Users\kg\AppData\Local\Temp\serious_python_sitecustomizedf99ffbe
Deleting Python directory C:\Users\kg\AppData\Local\Temp\hostpython3.11_4586fc97
Unhandled exception:
PathAccessException: Deletion failed, path = 'C:\Users\kg\AppData\Local\Temp\hostpython3.11_4586fc97' (OS Error: Access is denied.
, errno = 5)
#0 _checkForErrorResponse (dart:io/common.dart:55:9)
#1 _Directory._delete. (dart:io/directory_impl.dart:180:7)

#2 PackageCommand.run (file:///C:/Users/kg/AppData/Local/Pub/Cache/hosted/pub.dev/serious_python-0.7.1/bin/package_command.dart:363:9)

#3 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#4 main (file:///C:/Users/kg/AppData/Local/Pub/Cache/hosted/pub.dev/serious_python-0.7.1/bin/main.dart:10:3)

[10:21:28] Deleting Flutter bootstrap directory C:\Users\kg\AppData\Local\Temp\flet_flutter_build_bEl3t76syP
Error building Flet app - see the log of failed command above.

Expected behavior

The build process should be success.

Screenshots / Videos

Captures

[Upload media here]


Operating System

Windows

Operating system details

Windows 10 Pro Version 22H2

Flet version

both happend in 0.23.2 and 0.22.1 with same issue

Regression

No, it isn't

Suggestions

Not a clue.

Logs

Logs

[Paste your logs here]

Additional details

No response

[ndonkoHenri]

Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref 0.23.2 ✅
.....
Installing dependencies [flet-embed==0.22.*]

Can you share your requirements file and the output of flutter doctor?

[Buggist]

Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref 0.23.2 ✅
.....
Installing dependencies [flet-embed==0.22.*]

Can you share your requirements file and the output of flutter doctor?

requirements.txt

flet==0.22.*

[Buggist]

flutter doctor

C:\Users\kg\Desktop>flutter doctor

┌─────────────────────────────────────────────────────────┐
│ A new version of Flutter is available! │
│ │
│ To update to the latest version, run "flutter upgrade". │
└─────────────────────────────────────────────────────────┘
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.22.3, on Microsoft Windows [版本 10.0.19045.4651], locale zh-CN)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[!] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
X cmdline-tools component is missing
Run path/to/sdkmanager --install "cmdline-tools;latest"
See https://developer.android.com/studio/command-line for more details.
X Android license status unknown.
Run flutter doctor --android-licenses to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.10.5)
[√] Android Studio (version 2024.1)
[√] Connected device (3 available)
[√] Network resources

! Doctor found issues in 1 category.

Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref 0.23.2 ✅
.....
Installing dependencies [flet-embed==0.22.*]

Can you share your requirements file and the output of flutter doctor?

flutter doctor

C:\Users\kg\Desktop>flutter doctor

┌─────────────────────────────────────────────────────────┐
│ A new version of Flutter is available! │
│ │
│ To update to the latest version, run "flutter upgrade". │
└─────────────────────────────────────────────────────────┘
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.22.3, on Microsoft Windows [版本 10.0.19045.4651], locale zh-CN)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[!] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
X cmdline-tools component is missing
Run path/to/sdkmanager --install "cmdline-tools;latest"
See https://developer.android.com/studio/command-line for more details.
X Android license status unknown.
Run flutter doctor --android-licenses to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.10.5)
[√] Android Studio (version 2024.1)
[√] Connected device (3 available)
[√] Network resources

! Doctor found issues in 1 category.

[Buggist]

Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref 0.23.2 ✅
.....
Installing dependencies [flet-embed==0.22.*]

Can you share your requirements file and the output of flutter doctor?

Thank you for reply, now I already fixed all issues showed on flutter doctor, but it is no help with my condition of build error.

flutter doctor

C:\Users\kg\Desktop>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.22.3, on Microsoft Windows [Version 10.0.19045.4651], locale en-US)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.10.5)
[√] Android Studio (version 2024.1)
[√] Connected device (3 available)
[√] Network resources

• No issues found!

[tanmay-bhatgare]

@Buggist, I’ve noticed that the packaging process takes an unusually long time and displays the message, "Packaging Python files," when running flet build apk on a local machine. However, this issue does not occur when executed on a virtual machine. I recommend checking this discussion if you are still experiencing packaging errors.

[ByteJoseph]

@Buggist, I’ve noticed that the packaging process takes an unusually long time and displays the message, "Packaging Python files," when running flet build apk on a local machine. However, this issue does not occur when executed on a virtual machine. I recommend checking this discussion if you are still experiencing packaging errors.

I have same issue. How to use virtual machine ?

[tanmay-bhatgare]

@ByteJoseph in my previous reply I have mentioned a discussion see that, I have already told entire process step by step just follow it and you're good to go.

[ByteJoseph]

@ByteJoseph in my previous reply I have mentioned a discussion see that, I have already told entire process step by step just follow it and you're good to go.

Thanks

[ByteJoseph]

Have you turned on developer mode?
My issue is solved. It takes about 15 to 20 minutes to build the APK on my Windows 10 computer

[Buggist]

Have you turned on developer mode? My issue is solved. It takes about 15 to 20 minutes to build the APK on my Windows 10 computer

Yes I have.
I finally find out a work flow to deal with this building issue, but tortuous, and the building process is still not stable.