flet build with mysql Error

[runtimevic]

Hello,
flet build app with mysql --> destination : PC local windows 10 internet information server (IIS) ...

flet build web with fluter SDK -->flutter_windows_3.19.0-stable

python version 3.11.8

I would like to be able to build and view it on Windows locally with Internet Information Services (IIS),
I have tried with
flet build web and the flutter SDK and also with flet publish main.py and the dist that I get, I put it in IIS but it gives me errors when viewing in google, inspect, console...
I don't know what to do to continue...
I don't know if you can help me solve the problem I have that I can't do a deploy to put it on a web server, in this case locally in Windows 10...

• cmd --> flet build web

Creating Flutter bootstrap project...OK
Customizing app icons and splash images...OK
Generating app icons...OK
Generating splash screens...OK
Packaging Python app...OK
Building web app...OK
Copying build to build\web directory...OK
Success!

• flet build web -v

Flutter bootstrap directory: C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO
Additional Flutter dependencies:
{}
Creating Flutter bootstrap project...OK
Customizing app icons and splash images...OK
Generating app icons...
Run subprocess: ['C:\\Users\\Runtimevic\\Downloads\\flutter_windows_3.19.0-stable\\flutter\\bin\\dart.BAT', 'run', 'flutter_launcher_icons']
The Dart CLI developer tool uses Google Analytics to report usage and diagnostic
data along with package dependencies, and crash reporting to send basic crash
reports. This data is used to help improve the Dart platform, Flutter framework,
and related tools.

Telemetry is not sent on the very first run. To disable reporting of telemetry,
run this terminal command:

    dart --disable-analytics

If you opt out of telemetry, an opt-out event will be sent, and then no further
information will be sent. This data is collected in accordance with the Google
Privacy Policy (https://policies.google.com/privacy).

Resolving dependencies in C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO... (5.2s)
Got dependencies in C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO.
Building package executable... (17.4s)
Built flutter_launcher_icons:flutter_launcher_icons.
  ════════════════════════════════════════════
     FLUTTER LAUNCHER ICONS (v0.13.1)
  ════════════════════════════════════════════

• Creating default icons Android
• Overwriting the default Android launcher icon with a new icon
• Overwriting default iOS launcher icon with new icon
Creating Icons for Web...
Creating Icons for Windows...
Creating Icons for MacOS...

✓ Successfully generated launcher icons
OK
Generating splash screens...
Run subprocess: ['C:\\Users\\Runtimevic\\Downloads\\flutter_windows_3.19.0-stable\\flutter\\bin\\dart.BAT', 'run', 'flutter_native_splash:create']
Building package executable... (6.4s)
Built flutter_native_splash:create.
[Android] Creating default splash images
[Android] Creating dark mode splash images
[Android] Creating default android12splash images
[Android] Creating dark mode android12splash images
[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
[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
[Web] Updating index.html
╔════════════════════════════════════════════════════════════════════════════╗
║                       NEED A GREAT FLUTTER DEVELOPER?                      ║
╠════════════════════════════════════════════════════════════════════════════╣
║                                                                            ║
║   I am available!  Find me at https://www.linkedin.com/in/hansonjon/       ║
║                                                                            ║
╚════════════════════════════════════════════════════════════════════════════╝

✅ 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

OK
Packaging Python app...
Run subprocess: ['C:\\Users\\Runtimevic\\Downloads\\flutter_windows_3.19.0-stable\\flutter\\bin\\dart.BAT', 'run', 'serious_python:main', 'package',
'H:\\D_Datos_Crucial\\__INFORMATICA_2024\\_Flet\\bobwatcherx\\FletMysqlCRUD', '--web', '--dep-mappings', 'flet=flet-pyodide', '--req-deps', 'flet-pyodide,micropip', '--platform',
'emscripten_3_1_46_wasm32', '--find-links', 'C:\\Users\\RUNTIM~1\\AppData\\Local\\Temp\\flet_flutter_build_jaAyWjDMKO\\find-links.html', '--exclude', 'assets,build']
Building package executable... (4.9s)
Built serious_python:main.
Running package command
Creating asset directory: C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO\app
Copying Python app from H:\D_Datos_Crucial\__INFORMATICA_2024\_Flet\bobwatcherx\FletMysqlCRUD to C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempa9afd214
Configured emscripten_3_1_46_wasm32 platform with sitecustomize.py at C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_sitecustomize95607f11\sitecustomize.py
Installing 'find-links' dependencies [certifi, click, idna, packaging, requests, six, typing_extensions, urllib3, micropip] with pip command to C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempa9afd214\__pypackages__
Extracting Python distributive from C:\Users\RUNTIM~1\AppData\Local\Temp\cpython-3.11.6+20231002-x86_64-pc-windows-msvc-shared-install_only.tar.gz to C:\Users\RUNTIM~1\AppData\Local\Temp\hostpython3.11_9e3a15ce
Installing dependencies [anyio, arrow, binaryornot, chardet, charset-normalizer, colorama, cookiecutter, flet-pyodide, flet-core, flet-runtime, h11, httpcore, httpx, Jinja2, markdown-it-py, MarkupSafe, mdurl, mysql-connector-python, oauthlib, Pygments, pypng, python-dateutil, python-slugify, PyYAML, qrcode, repath, rich, sniffio, text-unidecode, types-python-dateutil, watchdog, websocket-client, websockets] with pip command to C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempa9afd214\__pypackages__
Compiling Python sources at C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempa9afd214
Delete unnecessary files with extensions: [.py, .c, .h, .typed, .exe, .a, .pdb, .pyd, .dll]
Delete unnecessary files and directories: [__pycache__, bin]
Creating app archive at C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO\app/app.zip from C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempa9afd214
Deleting temp directory C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempa9afd214
Deleting sitecustomize directory C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_sitecustomize95607f11
Deleting Python directory C:\Users\RUNTIM~1\AppData\Local\Temp\hostpython3.11_9e3a15ce
OK
Building web app...
Run subprocess: ['C:\\Users\\Runtimevic\\Downloads\\flutter_windows_3.19.0-stable\\flutter\\bin\\flutter.BAT', 'build', 'web']
Resolving dependencies...
  fl_chart 0.65.0 (0.66.2 available)
  flutter_lints 2.0.3 (3.0.1 available)
  flutter_native_splash 2.3.7 (2.3.13 available)
  js 0.6.7 (0.7.1 available)
  leak_tracker 10.0.0 (10.0.4 available)
  leak_tracker_flutter_testing 2.0.1 (3.0.3 available)
  leak_tracker_testing 2.0.1 (3.0.1 available)
  lints 2.1.1 (3.0.0 available)
  meta 1.11.0 (1.12.0 available)
  package_info_plus 4.2.0 (5.0.1 available)
  petitparser 5.4.0 (6.0.2 available)
  shared_preferences_web 2.2.1 (2.2.2 available)
  test_api 0.6.1 (0.7.0 available)
  toml 0.14.0 (0.15.0 available)
  url_launcher_web 2.2.0 (2.2.3 available)
  vm_service 13.0.0 (14.0.0 available)
  xml 6.3.0 (6.5.0 available)
Got dependencies!
17 packages have newer versions incompatible with dependency constraints.
Try `flutter pub outdated` for more information.

Font asset "CupertinoIcons.ttf" was tree-shaken, reducing it from 283452 to 212716 bytes (25.0% reduction). Tree-shaking can be disabled by providing the --no-tree-shake-icons
flag when building your app.
Font asset "MaterialIcons-Regular.otf" was tree-shaken, reducing it from 1645184 to 1261120 bytes (23.3% reduction). Tree-shaking can be disabled by providing the
--no-tree-shake-icons flag when building your app.
Compiling lib\main.dart for the Web...                            162,4s
OK
Copying build to build\web directory...Copying build output from: C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO\build\web\*
OK
Deleting Flutter bootstrap directory C:\Users\RUNTIM~1\AppData\Local\Temp\flet_flutter_build_jaAyWjDMKO
Success!

• google console:

flutter.js:3 Exception while loading service worker: Error: prepareServiceWorker took more than 4000ms to resolve. Moving on.
    at flutter.js:1:336
(anonymous) @ flutter.js:3
canvaskit.js:129 WebGL: this extension has very low support on mobile devices; do not rely on it for rendering effects: WEBGL_polygon_mode
(anonymous) @ canvaskit.js:129
pyodide.asm.js:9 Authorization classes are not loaded, using fake implementations.
batched @ pyodide.asm.js:9
pyodide.asm.js:9 WebSocket connection to 'ws://192.168.1.49:3306/' failed: WebSocket is closed before the connection is established.
close @ pyodide.asm.js:9
pyodide.asm.js:9 Traceback (most recent call last):
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\__pypackages__\mysql\connector\network.py", line 758, in open_connection
batched @ pyodide.asm.js:9
pyodide.asm.js:9 BlockingIOError: [Errno 26] Operation in progress
batched @ pyodide.asm.js:9
pyodide.asm.js:9 
batched @ pyodide.asm.js:9
pyodide.asm.js:9 The above exception was the direct cause of the following exception:
batched @ pyodide.asm.js:9
pyodide.asm.js:9 
batched @ pyodide.asm.js:9
pyodide.asm.js:9 Traceback (most recent call last):
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "<exec>", line 8, in <module>
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "<frozen runpy>", line 229, in run_module
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "<frozen runpy>", line 88, in _run_code
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\main.py", line 8, in <module>
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\__pypackages__\mysql\connector\pooling.py", line 323, in connect
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\__pypackages__\mysql\connector\connection.py", line 173, in __init__
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\__pypackages__\mysql\connector\abstracts.py", line 1363, in connect
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\__pypackages__\mysql\connector\connection.py", line 353, in _open_connection
batched @ pyodide.asm.js:9
pyodide.asm.js:9   File "C:\Users\RUNTIM~1\AppData\Local\Temp\serious_python_tempe8b816be\__pypackages__\mysql\connector\network.py", line 760, in open_connection
batched @ pyodide.asm.js:9
pyodide.asm.js:9 mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on '192.168.1.49:3306' (26 Operation in progress)
batched @ pyodide.asm.js:9
python-worker.js:22 Uncaught (in promise) TypeError: self.flet_js.start_connection is not a function
    at self.initPyodide (python-worker.js:22:24)
    at async self.onmessage (python-worker.js:36:9)

• file requirements.txt

anyio
arrow
binaryornot
certifi
chardet
charset-normalizer
click
colorama
cookiecutter
flet
flet-core
flet-runtime
h11
httpcore
httpx
idna
Jinja2
markdown-it-py
MarkupSafe
mdurl
mysql-connector-python
oauthlib
packaging
Pygments
pypng
python-dateutil
python-slugify
PyYAML
qrcode
repath
requests
rich
six
sniffio
text-unidecode
types-python-dateutil
typing_extensions
urllib3
watchdog
websocket-client
websockets

• local host now using python -m http.server --directory build/web

mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on '192.168.1.49:3306'
Uncaught (in promise) TypeError: self.flet_js.start_connection is not a function
    at self.initPyodide (python-worker.js:22:24)
    at async self.onmessage (python-worker.js:36:9)

[runtimevic]

Hello,
some help?
thanks...

[glira]

give answer here if you have success please. you problem is same of many.

[burhansvural]

https://learn.microsoft.com/en-us/visualstudio/python/configure-web-apps-for-iis-windows?view=vs-2022

[runtimevic]

https://learn.microsoft.com/en-us/visualstudio/python/configure-web-apps-for-iis-windows?view=vs-2022

Thanks for the link, but it doesn't talk anything about Flet case...

[ndonkoHenri]

Pyodide we use has some limitations: https://flet.dev/docs/publish/web#:~:text=Python%C2%A0compatibility
List of supported packages: https://pyodide.org/en/stable/usage/packages-in-pyodide.html