rmaziere opened a new issue, #65327:
URL: https://github.com/apache/airflow/issues/65327
### Under which category would you file this issue?
Airflow Core
### Apache Airflow version
3.1.6
### What happened and how to reproduce it?
On Debian VM, Airflow 3.1.5 installed by pip.
When I upgrade to 3.1.6 with pip install, the install is successful but
after restarting `airflow-api-server.service` the web ui is blank.
If I inspect the source code in my webbrowser I've :
```html
<!doctype html>
<html style="height: 100%" dir="ltr" lang="en">
<head>
<meta charset="UTF-8" />
<base href="[/](view-source:https://51.15.230.10/)" />
<link rel="icon" type="image/png" href="./static/pin_32.png" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Airflow</title>
<script type="module" crossorigin
src="./static/assets/index-BpILZJIF.js"></script>
</head>
<body style="height: 100%">
<div id="root" style="height: 100%"></div>
</body>
</html>
```
The airflow-api-server.service status give me : `"GET
/static/assets/index-BpILZJIF.js HTTP/1.1" 404 Not Found`
```log
sudo systemctl status airflow-api-server.service
● airflow-api-server.service - Airflow api-server daemon
Loaded: loaded (/etc/systemd/system/airflow-api-server.service;
enabled; preset: enabled)
Active: active (running) since Wed 2026-04-15 17:29:14 CEST; 12min ago
Main PID: 12401 (airflow api_ser)
Tasks: 7 (limit: 14334)
Memory: 180.7M
CPU: 5.728s
CGroup: /system.slice/airflow-api-server.service
└─12401 "airflow api_server -- host:0.0.0.0 port:8080"
avril 15 17:29:19 scw-pedantic-ardinghelli bash[12401]: INFO: Started
server process [12401]
avril 15 17:29:19 scw-pedantic-ardinghelli bash[12401]: INFO: Waiting
for application startup.
avril 15 17:29:19 scw-pedantic-ardinghelli bash[12401]: INFO:
Application startup complete.
avril 15 17:29:19 scw-pedantic-ardinghelli bash[12401]: INFO: Uvicorn
running on http://0.0.0.0:8080 (Press CTRL+C to quit)
avril 15 17:29:19 scw-pedantic-ardinghelli bash[12401]: INFO:
127.0.0.1:59952 - "GET / HTTP/1.1" 200 OK
avril 15 17:29:33 scw-pedantic-ardinghelli bash[12401]: INFO:
127.0.0.1:60230 - "GET / HTTP/1.1" 200 OK
avril 15 17:29:33 scw-pedantic-ardinghelli bash[12401]: INFO:
127.0.0.1:60242 - "GET /static/assets/index-BpILZJIF.js HTTP/1.1" 404 Not Found
avril 15 17:29:33 scw-pedantic-ardinghelli bash[12401]: INFO:
127.0.0.1:60246 - "GET /static/pin_32.png HTTP/1.1" 404 Not Found
avril 15 17:34:35 scw-pedantic-ardinghelli bash[12401]: INFO:
127.0.0.1:38148 - "GET / HTTP/1.1" 200 OK
avril 15 17:34:35 scw-pedantic-ardinghelli bash[12401]: INFO:
127.0.0.1:38158 - "GET /static/assets/index-BpILZJIF.js HTTP/1.1" 404 Not Found
```
If I check if this script exists :
```sh
sudo find /opt/airflow/ -type f -name index-BpILZJIF.js
/opt/airflow/env/lib/python3.11/site-packages/airflow/ui/dist/assets/index-BpILZJIF.js
```
### What you think should happen instead?
_No response_
### Operating System
Debian 12 / Python 3.11.2
### Deployment
Virtualenv installation
### Apache Airflow Provider(s)
_No response_
### Versions of Apache Airflow Providers
apache-airflow-providers-amazon==9.19.0
apache-airflow-providers-common-compat==1.11.0
apache-airflow-providers-common-io==1.7.0
apache-airflow-providers-common-sql==1.30.2
apache-airflow-providers-fab==2.4.0
apache-airflow-providers-http==5.6.2
apache-airflow-providers-mongo==5.3.1
apache-airflow-providers-postgres==6.5.1
apache-airflow-providers-smtp==2.4.1
apache-airflow-providers-ssh==4.2.1
apache-airflow-providers-standard==1.10.2
### Official Helm Chart version
Not Applicable
### Kubernetes Version
_No response_
### Helm Chart configuration
_No response_
### Docker Image customizations
Not Applicable
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [x] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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