FastAPI with nginx does not serve static files in HTTPS

I have a small, test FastAPI web application that is serving a simple HTML page that requires a css style sheet located in the static folder. It is installed on a Linode server (Ubuntu 20.04 LTS), nginx, gunicorn, uvicorn workers, and supervisorctl. I have added a certificate using certbot.

The application works fine in http but does not access the static files in https. When accessed in http all static-based features work but when accessed with https it lacks all styling from css stylesheet. I need to get this working so I can load a much more complex app that needs css and other static folder-stored features.

The file structure is:

/home/<user_name>/application- main.py- static   |_ css   |_ bootstrap- templates   |_ index.html

main.py:

import fastapiimport uvicornfrom fastapi import Requestfrom fastapi.responses import HTMLResponsefrom fastapi.staticfiles import StaticFilesfrom fastapi.templating import Jinja2Templatesapi = fastapi.FastAPI()api.mount('/static', StaticFiles(directory='static'), name='static')templates = Jinja2Templates(directory="templates")@api.get('/')@api.get('/index', response_class=HTMLResponse)def index(request: Request):    message = None    return templates.TemplateResponse("index.html", {"request": request,'message': message})if __name__ == '__main__':    uvicorn.run(api, port=8000, host='127.0.0.1')

nginx is at /etc/nginx/sites-enabled/<my_url>.nginx

server {    listen 80;    server_name www.<my_url>.com <my_url>.com;    server_tokens off;    charset utf-8;    location / {        try_files $uri @yourapplication;    }    location /static {        gzip            on;        gzip_buffers    8 256k;        alias /home/<user_name>/application/static;        expires 365d;    }    location @yourapplication {        gzip            on;        gzip_buffers    8 256k;        proxy_pass http://127.0.0.1:8000;        proxy_set_header Host $host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-Protocol $scheme;    }  }server {    listen              443 ssl;    server_name         www.<my_url>.com;    ssl_certificate /etc/letsencrypt/live/<my_url>.com/fullchain.pem; # mana>    ssl_certificate_key /etc/letsencrypt/live/<my_url>.com/privkey.pem; # ma>    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot    location / {        try_files $uri @yourapplication;    }  location /static {        gzip            on;        gzip_buffers    8 256k;        alias /home/<user_name>/application/static;        expires 365d;    }    location @yourapplication {        gzip            on;        gzip_buffers    8 256k;        proxy_pass http://127.0.0.1:8000;        proxy_set_header Host $host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-Protocol $scheme;    }}

and am serving using supervisor script:

[program:api]directory=/home/<user_name>/applicationcommand=gunicorn -b 127.0.0.1:8000 -w 4 -k uvicorn.workers.UvicornWorker main:apienvironmentenvironment=PYTHONPATH=1autostart=trueautorestart=truestopasgroup=truekillasgroup=truestderr_logfile=/var/log/app/app.err.logstdout_logfile=/var/log/app/app.out.log

The css stylesheet is called in the html using url_for like this:

<link href="{{ url_for('static', path='/css/ATB_style.css') }}" rel="stylesheet">

I have tried a whole host of modifications to the location /static block in nginx including:

• adding slash after static in either line or both
• trying to add https://static or https://www.<my_url>.com/home/<my_url>/application/static
• adding and removing the location static from the http and https lines
• changing proxy_pass to https://127.0.0.1:8000;
• added root /home/<user_name>/application to the server section

I have loaded this server twice, once letting certbot modify the nginx file the second, and current configuration, where I did it manually. I am at a complete loss on what to do.