After auto update to 9.0.14: backup errors

[imc67]

Last night one of my 3 Cloudron servers auto-updated to 9.0.14.

The first auto-backup after it errored (see below).
I tried to edit/safe config and remount and manual started a backup an again the same error!

Server info:

Cloudron version 9.0.14
Ubuntu version Ubuntu 22.04.5 LTS Linux 5.15.0-163-generic
Vendor netcup
Product KVM Server
CPU 10 Core "AMD EPYC 7702P 64-Core Processor"
Memory 67.42 GB RAM & 4.29 GB Swap
Uptime 4 days
Cloudron creation time unknown

Backup type:

DefaultEverything
Storage: sshfs (rsync) at u*******.your-storagebox.de:/home
Schedule: Every day @ 00:00, 08:00, 12:00, 16:00, 20:00
Retention Policy: 7 daily, 4 weekly, 12 monthly
Last run: 12 dec 2025, 08:01
SSH connection error: ssh exited with code 255 signal null 

Error:

Dec 12 08:01:53 box:shell filesystem: ssh -o "StrictHostKeyChecking no" -i /tmp/identity_file-mnt-managedbackups-6de7dc51-23ad-45e7-b6e4-137d769995ab -p 23 *****@******.your-storagebox.de rm -rf snapshot/app_1ceb591b-97ad-4793-8942-cf5853d739fb/data/public/wp-content/cache/****** errored BoxError: ssh exited with code 255 signal null
Dec 12 08:01:53 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:82:23)
Dec 12 08:01:53 at ChildProcess.emit (node:events:519:28)
Dec 12 08:01:53 at maybeClose (node:internal/child_process:1101:16)
Dec 12 08:01:53 at ChildProcess._handle.onexit (node:internal/child_process:304:5) {
Dec 12 08:01:53 reason: 'Shell Error',
Dec 12 08:01:53 details: {},
Dec 12 08:01:53 stdout: <Buffer >,
Dec 12 08:01:53 stdoutLineCount: 0,
Dec 12 08:01:53 stderr: <Buffer 57 61 72 6e 69 6e 67 3a 20 49 64 65 6e 74 69 74 79 20 66 69 6c 65 20 2f 74 6d 70 2f 69 64 65 6e 74 69 74 79 5f 66 69 6c 65 2d 6d 6e 74 2d 6d 61 6e 61 ... 244 more bytes>,
Dec 12 08:01:53 stderrLineCount: 4,
Dec 12 08:01:53 code: 255,
Dec 12 08:01:53 signal: null,
Dec 12 08:01:53 timedOut: false,
Dec 12 08:01:53 terminated: false
Dec 12 08:01:53 }
Dec 12 08:01:53 box:backupformat/rsync sync: done processing deletes. error: BoxError: SSH connection error: ssh exited with code 255 signal null at Object.removeDir (/home/yellowtent/box/src/storage/filesystem.js:286:47) at process.processTicksAndRejections (node:internal/process/task_queues:105:5) at async processSyncerChange (/home/yellowtent/box/src/backupformat/rsync.js:110:13) at async /home/yellowtent/box/src/backupformat/rsync.js:128:92 { reason: 'External Error', details: {} }
Dec 12 08:01:53 box:backupupload upload completed. error: BoxError: SSH connection error: ssh exited with code 255 signal null at Object.removeDir (/home/yellowtent/box/src/storage/filesystem.js:286:47) at process.processTicksAndRejections (node:internal/process/task_queues:105:5) at async processSyncerChange (/home/yellowtent/box/src/backupformat/rsync.js:110:13) at async /home/yellowtent/box/src/backupformat/rsync.js:128:92 { reason: 'External Error', details: {} }
Dec 12 08:01:53 box:backuptask runBackupUpload: result - {"errorMessage":"SSH connection error: ssh exited with code 255 signal null"}
Dec 12 08:01:54 box:shell backuptask: /usr/bin/sudo --non-interactive -E --close-from=4 /home/yellowtent/box/src/scripts/backupupload.js snapshot/app_1ceb591b-97ad-4793-8942-cf5853d739fb 6de7dc51-23ad-45e7-b6e4-137d769995ab {"localRoot":"/home/yellowtent/appsdata/1ceb591b-97ad-4793-8942-cf5853d739fb","layout":[]} errored BoxError: /usr/bin/sudo exited with code 50 signal null
Dec 12 08:01:54 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:82:23)
Dec 12 08:01:54 at ChildProcess.emit (node:events:519:28)
Dec 12 08:01:54 at maybeClose (node:internal/child_process:1101:16)
Dec 12 08:01:54 at ChildProcess._handle.onexit (node:internal/child_process:304:5) {
Dec 12 08:01:54 reason: 'Shell Error',
Dec 12 08:01:54 details: {},
Dec 12 08:01:54 stdout: '',
Dec 12 08:01:54 stdoutLineCount: 0,
Dec 12 08:01:54 stderr: '',
Dec 12 08:01:54 stderrLineCount: 0,
Dec 12 08:01:54 code: 50,
Dec 12 08:01:54 signal: null,
Dec 12 08:01:54 timedOut: false,
Dec 12 08:01:54 terminated: false
Dec 12 08:01:54 }
Dec 12 08:01:54 box:backuptask fullBackup: app *******.nl backup finished. Took 4.634 seconds
Dec 12 08:01:54 box:locks write: current locks: {"full_backup_task_6de7dc51-23ad-45e7-b6e4-137d769995ab":null}
Dec 12 08:01:54 box:locks release: app_backup_1ceb591b-97ad-4793-8942-cf5853d739fb
Dec 12 08:01:54 box:tasks setCompleted - 18576: {"result":null,"error":{"message":"SSH connection error: ssh exited with code 255 signal null","reason":"External Error"},"percent":100}
Dec 12 08:01:54 box:tasks updating task 18576 with: {"completed":true,"result":null,"error":{"message":"SSH connection error: ssh exited with code 255 signal null","reason":"External Error"},"percent":100}
Dec 12 08:01:54 box:taskworker Task took 24.755 seconds
Dec 12 08:01:54 BoxError: SSH connection error: ssh exited with code 255 signal null
Dec 12 08:01:54 at runBackupUpload (/home/yellowtent/box/src/backuptask.js:204:15)
Dec 12 08:01:54 at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
Dec 12 08:01:54 at async uploadAppSnapshot (/home/yellowtent/box/src/backuptask.js:370:34)
Dec 12 08:01:54 at async backupAppWithTag (/home/yellowtent/box/src/backuptask.js:393:26)
Dec 12 08:01:54 Exiting with code 0