flet build windows used the --no-rich-output parameter but still encountered an error.

[jessic-cmd]

Duplicate Check

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

Describe the bug

When I use Azure Pipelines to build the application

    - task: CmdLine@2
      inputs:
        script: |
          flet build windows --no-rich-output
      displayName: 'Build Flet Application for Windows'

I encounter an error:

 self.write(text)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\encodings\cp1252.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
UnicodeEncodeError: 'charmap' codec can't encode character '\u25cf' in position 2: character maps to <undefined>

Code sample

Code

Starting: Install Flutter SDK
==============================================================================
Task         : Flutter Install Task
Description  : Install the Flutter environment.
Version      : 0.4.3
Author       : Hey24sheep
Help         : For more information, take a look at the Flutter [documentation](https://flutter.io/)
==============================================================================
Downloading: https://storage.googleapis.com/flutter_infra_release/releases/stable/windows/flutter_windows_3.29.2-stable.zip
Extracting archive
C:\Windows\system32\chcp.com 65001
Active code page: 65001

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoLogo -Sta -NoProfile -NonInteractive -ExecutionPolicy Unrestricted -Command "$ErrorActionPreference = 'Stop' ; try { Add-Type -AssemblyName System.IO.Compression.FileSystem } catch { } ; [System.IO.Compression.ZipFile]::ExtractToDirectory('D:\a\_temp\f4deeb81-2668-46c1-a7f6-ae4b274219d9', 'D:\a\_temp\0b66db16-b726-44aa-9eac-1f8bccb29ab0')"

Caching tool: Flutter 3.29.2 windows
Found tool in cache: Flutter 3.29.2 windows
Finishing: Install Flutter SDK

  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\flet_cli\commands\build.py", line 615, in handle
    with Live(Group(self.status, self.progress), console=console) as self.live:
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\live.py", line 166, in __enter__
    self.start(refresh=self._renderable is not None)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\live.py", line 128, in start
    self.stop()
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\live.py", line 147, in stop
    with self.console:
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\console.py", line 864, in __exit__
    self._exit_buffer()
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\console.py", line 822, in _exit_buffer
    self._check_buffer()
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\console.py", line 2019, in _check_buffer
    self._write_buffer()
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\console.py", line 2055, in _write_buffer
    legacy_windows_render(buffer, LegacyWindowsTerm(self.file))
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\_windows_renderer.py", line 17, in legacy_windows_render
    term.write_styled(text, style)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\_win32_console.py", line 441, in write_styled
    self.write_text(text)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\rich\_win32_console.py", line 402, in write_text
    self.write(text)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\encodings\cp1252.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
UnicodeEncodeError: 'charmap' codec can't encode character '\u25cf' in position 2: character maps to <undefined>
##[error]Cmd.exe exited with code '1'.
Finishing: Build Flet Application for Windows

To reproduce

azure piplines

flutter version:3.29.2
python version : 3.10
flet version : 0.27.6

Expected behavior

No response

Screenshots / Videos

Captures

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Operating System

Windows

Operating system details

windows-latest

Flet version

0.27.6

Regression

No, it isn't

Suggestions

No response

Logs

Logs

[Paste your logs here]

Additional details

No response

[ndonkoHenri]

Can you try setting the env var PYTHONUTF8 to 1?

[jessic-cmd]

Can you try setting the env var PYTHONUTF8 to 1?

Thank you very much for your reply.

I tried setting set PYTHONUTF8=1, but I got the same error.

Script contents: shell
set PYTHONUTF8=1
========================== Starting Command Output ===========================
"C:\Windows\system32\cmd.exe" /D /E:ON /V:OFF /S /C "CALL "D:\a\_temp\1ae8f493-ce17-4f81-87e6-28d5573cb98a.cmd""
Finishing: set env (cmdline)

  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\encodings\cp1252.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
UnicodeEncodeError: 'charmap' codec can't encode character '\u25cf' in position 2: character maps to <undefined>
##[error]Cmd.exe exited with code '1'.
Finishing: Build Flet Application for Windows

[jessic-cmd]

Sorry, I accidentally clicked "close comment". Please reopen this issue.

[ndonkoHenri]

Try setting it in the environment variables of the CI.

I have a working example using Github actions. Here is my workflow file: https://github.com/ndonkoHenri/flet-github-action-workflows/actions/runs/13727281116/workflow

[jessic-cmd]

Try setting it in the environment variables of the CI.

I have a working example using Github actions. Here is my workflow file: https://github.com/ndonkoHenri/flet-github-action-workflows/actions/runs/13727281116/workflow

Awesome, it's working now! Thank you so much.