docs(self-hosted): troubleshooting guide for errors caused of minified assets by CDNs

Closes getsentry/self-hosted#2962

Author: aldy505

develop-docs/self-hosted/troubleshooting/sentry.mdx

@@ -51,3 +51,13 @@ worker1:
 ```
 
 To see a more complete example, please see [a sample solution on our community forum](https://forum.sentry.io/t/how-to-clear-backlog-and-monitor-it/10715/14?u=byk).
+
+## Cannot load Javascript or CSS files from web interface
+
+If you are running your Sentry instance behind a CDN like Cloudflare, Fastify, or the like, you may see some errors of invalid Javascript or CSS files being loaded from the web interface. This is caused by some static asset files are already optimized by the bundlers, but isn't being served with minified extensions (e.g. `.min.js`). Therefore, the CDN that you are using will try to optimize the files for the second time, which will result in corrupted files.
+
+Some known paths that you may see this error:
+* _static/dist/sentry/entrypoints/sentry.css
+* _static/dist/sentry/entrypoints/app.js
+
+To fix this, you can disable the auto optimization performed by your CDN.