May 03 04:01:22 BoxError: Upload error: code: InvalidDigest message: The Content-MD5 or checksum value that you specified is not valid.
    at runBackupUpload (file:///home/yellowtent/box/src/backuptask.js:192:15)
    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
    at async uploadAppSnapshot (file:///home/yellowtent/box/src/backuptask.js:359:34)
    at async backupAppWithTag (file:///home/yellowtent/box/src/backuptask.js:382:26)

• Here is the output of cloudron-support --troubleshoot (near identical on both servers):

Vendor: QEMU Product: Standard PC (i440FX + PIIX, 1996)
Linux: 6.8.0-110-generic
Ubuntu: noble 24.04
Cloudron: 9.1.7
Execution environment: kvm
Processor: AMD Ryzen 7 7840HS w/ Radeon 780M Graphics
BIOS pc-i440fx-10.1  CPU @ 2.0GHz x 4
RAM: 16377028KB
Disk: /dev/mapper/ubuntu--vg-ubuntu--lv  117G
[OK]    node version is correct
[OK]    IPv6 is enabled in kernel. No public IPv6 address
[OK]    docker is running
[OK]    docker version is correct
[OK]    MySQL is running
[OK]    netplan is good
[OK]    DNS is resolving via systemd-resolved
[OK]    unbound is running
[OK]    nginx is running
[OK]    dashboard cert is valid
[OK]    dashboard is reachable via loopback
[OK]    No pending database migrations
[WARN]  Service 'mysql' is not running (may be lazy-stopped)
[WARN]  Service 'postgresql' is not running (may be lazy-stopped)
[WARN]  Service 'mongodb' is not running (may be lazy-stopped)
[OK]    Service 'mail' is running and healthy
[OK]    Service 'graphite' is running and healthy
[OK]    Service 'sftp' is running and healthy
[OK]    box v9.1.7 is running
[OK]    Dashboard is reachable via domain name

• There is no relevant information in /home/yellowtent/platformdata/logs/box.log other than the related one above.
• Attempting to add a new backup site result in the following error:

Error put object cloudron-testfile. code: InvalidDigest message: The Content-MD5 or checksum value that you specified is not valid. HTTP: 400

• Cloudron servers can ping the S3 endpoint just fine.

I am wondering what this message means and the best way to troubleshoot this further.