[🐛 BUG] Using the base_url configuration causes a 404 response on .js files. #2726
Description
🔍 What went wrong?
I'm developing an app with Taipy, and I need to set the base_url parameter. When I run the application using the following code,
tp.run(
tui,
port=port,
host=host,
debug=debug,
title=core_container.config.taipy.title(),
base_url=root_path,
run_browser=False,
dark_mode=False,
use_reloader=reload,
time_zone="America/Mexico_City",
notification_duration=5000,
watermark="",
# async_mode="gevent",
stylekit=style_kit,
flask_log=True,
)HTML code:
<!doctype html>
<html lang="en">
<head>
<base href="/wholesale_report/"/>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width,initial-scale=1"/>
<link rel="manifest" href="manifest.json"/>
<link rel="icon" type="image/png" href="favicon.png" class="taipy-favicon" data-url="https://raw.githubusercontent.com/Avaiga/taipy-assets/develop/favicon.png?version=4.1.0"/>
<link rel="apple-touch-icon" href="favicon.png"/>
<title>Wholesale Client Report</title>
<script>window.taipyConfig={"baseURL": "/wholesale_report/", "darkMode": false, "extensions": {"./taipy-extension/TaipyGuiCore": ["ScenarioSelector", "Scenario", "ScenarioDag", "DataNodeSelector", "DataNode", "JobSelector"]}, "stylekit": {"borderRadius": 8, "colorBackgroundDark": "#152335", "colorBackgroundLight": "transparent", "colorError": "#ff4d1d", "colorPaperDark": "#1f2f44", "colorPaperLight": "#ffffff", "colorPrimary": "#1e88e5", "colorSecondary": "#7f56d9", "colorSuccess": "#52c41a", "colorWarning": "#fec84b", "fontFamily": "Lato, Arial, sans-serif", "inputButtonHeight": "48px", "rootMargin": "1rem"}, "timeZone": "America/Mexico_City"};window.taipyVersion="4.1.0";
</script>
<style>:root{--color-primary:#1e88e5; --color-secondary:#7f56d9; --color-error:#ff4d1d; --color-warning:#fec84b; --color-success:#52c41a; --color-background-light:transparent; --color-paper-light:#ffffff; --color-background-dark:#152335; --color-paper-dark:#1f2f44; --font-family:"Lato, Arial, sans-serif"; --root-margin:1rem; --border-radius:8px; --input-button-height:48px; }</style>
<script defer="defer" src="taipy-gui-deps.dll.js?2e5e009c67dfd8a6d450"></script>
<script defer="defer" src="taipy-gui.js?2e5e009c67dfd8a6d450"></script>
<script defer="defer" src="taipy-gui-dom.js?2e5e009c67dfd8a6d450"></script>
</head>
<body>
<script defer="defer" src="taipy-extension/taipy_gui_core/lib/taipy-gui-core.js?v=4.1.0"></script>
<link rel="stylesheet" href="stylekit/stylekit.css"/>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
</body>
</html>the HTML is correctly configured as shown above, but the service returns 404 errors, for example:
INFO 2025-09-17 14:49:31.231 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/ HTTP/1.1" 200 2200 0.005067
INFO 2025-09-17 14:49:31.240 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/taipy-gui-deps.dll.js?2e5e009c67dfd8a6d450 HTTP/1.1" 404 154 0.000861
INFO 2025-09-17 14:49:31.242 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/taipy-gui.js?2e5e009c67dfd8a6d450 HTTP/1.1" 404 154 0.000584
INFO 2025-09-17 14:49:31.243 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/stylekit/stylekit.css HTTP/1.1" 404 154 0.000651
INFO 2025-09-17 14:49:31.244 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/taipy-gui-dom.js?2e5e009c67dfd8a6d450 HTTP/1.1" 404 154 0.000417
INFO 2025-09-17 14:49:31.245 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/taipy-extension/taipy_gui_core/lib/taipy-gui-core.js?v=4.1.0 HTTP/1.1" 404 154 0.000472
INFO 2025-09-17 14:49:31.250 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /.well-known/appspecific/com.chrome.devtools.json HTTP/1.1" 404 154 0.000548
INFO 2025-09-17 14:49:31.266 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 14:49:31] "GET /wholesale_report/manifest.json HTTP/1.1" 404 154 0.000622
INFO 2025-09-17 15:10:15.124 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 15:10:15] "GET /wholesale_report/ HTTP/1.1" 200 2200 0.000844
INFO 2025-09-17 15:10:15.141 request id: app - logging:callHandlers - 127.0.0.1 - - [2025-09-17 15:10:15] "GET /favicon.ico HTTP/1.1" 200 4382 0.001400✅ Expected Behavior
The expected behavior should be that the service should correctly return the files with the base_url content as a prefix.
🖼️ Screenshots (Optional)
App logs:
Page source:
📦 Taipy Version
4.1.0
📋 Additional Context (Optional)
📜 Code of Conduct
- I have checked the existing issues to avoid duplicates.
- I am willing to work on this issue (optional)
✅ Acceptance Criteria
- A reproducible unit test is added.
- Code coverage is at least 90%.
- The bug reporter validated the fix.
- Relevant documentation updates or an issue created in