RC5 of Nextcloud 28.0.2

Fortsetzung der Diskussion von RC4 of Nextcloud 28.0.2:

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Hey Nerds! :nerd_face: :wave:

I managed to get rid of all other error messages after updating to 28.0.2, but I do not understand how to resolve this one:

I have also checked and read this according bug: https://github.com/nextcloud/server/issues/42989

Output of my curl command is:

~# curl -I https://cloud.sieh.org/apps/settings/js/esm-test.mjs
HTTP/1.1 200 OK
Server: nginx
Date: Fri, 02 Feb 2024 12:46:44 GMT
Content-Type: text/javascript
Content-Length: 109
Connection: keep-alive
Vary: Accept-Encoding
Referrer-Policy: no-referrer
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Permitted-Cross-Domain-Policies: none
X-Robots-Tag: noindex, nofollow
X-XSS-Protection: 1; mode=block
Last-Modified: Fri, 02 Feb 2024 08:37:21 GMT
ETag: "6d-6106205424576"
Accept-Ranges: bytes
Vary: Accept-Encoding
Cache-Control: max-age=15778463
Strict-Transport-Security: max-age=31536000; includeSubDomains

I don’t know, how to fix this. And - to be honest - I also don’t know, what the error message is trying to tell me! :thinking: