Static files are not found (gunicorn)

I know this question was already asked frequently. But the supposed solutions seem not to help me.

Here is my Nginx definition for the static files

    location /static/ {
        alias /data/atsi_webapp/ATSi_WebApp/static;

Here my Django settings

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATIC_URL = '/static/'
    os.path.join(BASE_DIR, 'static'),

I did run already

python collectstatic

However, I get

Not Found: /static/js/xxxx.js


I think your nginx declaration causes the issue.

Could you please try this:

location /static/ {
    # static files
    autoindex on;
    autoindex_exact_size off;
    # /data/atsi_webapp/ATSi_WebApp <-- may be in your case
    root /exact/path/to/project/folder;

Instead of this:

location /static/ {
    alias /data/atsi_webapp/ATSi_WebApp/static;