@tecbox thanks for the report. The fix is https://git.cloudron.io/platform/box/-/commit/b759fdb6e35762ef5586c3e552a387c4aef15a42#da95ffafbc09b42991a792cd9824d5814e1ec274_373_372 . You just need that one line change.
Edit /home/yellowtent/box/src/storage/s3.js . Then change line 372. Basically, remove the leading slash at the front. No need to restart anything after making the change. Make a new backup, it should work. Can you please let me know?
return `${bucket}/${output}`;
In Cloudron 9, we upgraded the AWS library from v2 to v3. It's possible that v2 library automatically removed this trailing slash. Maybe in v3, they don't do this anymore. Hard to find any info, but it seems in other providers both works.