Failed update to NC 31.0.4 from 30.0.10 with NCP 1.55.4

[guandalf]

Usage ncp-update-nc <version>
root@tropdelaque:~# ncp-update-nc 0
Running as unit: ncp-update-nc.service
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  846k    0  846k    0     0  1228k      0 --:--:-- --:--:-- --:--:-- 1230k
Current   Nextcloud version 30.0.10
Requested Nextcloud version latest
Selected  Nextcloud version 31.0.4
INFO: You have requested an update to the latest available version that can be performed directly, which is '31.0.4'. Updates can only performed to the next major version (or the latest minor version of the current major version). If you run ncp-update-nc again after this update completes, a new version might be available.
Download Nextcloud 31.0.4...
Back up current instance...
check free space...
Maintenance mode enabled
backup database...
backup files...
backup /var/www/nextcloud-bkp_20250422_1745303282.tar.gz generated
Maintenance mode disabled
Storing backup at '/var/www/nextcloud-bkp_20250422_1745303282-30.0.10.tar.gz'...
Install Nextcloud 31.0.4...

Fix permissions...
Upgrade...
Nextcloud is not installed - only a limited number of commands are available


  Command "upgrade" is not defined.


Abort
Clean up...
Rolling back to backup /var/www/nextcloud-bkp_20250422_1745303282-30.0.10.tar.gz...
PHP Warning:  Undefined array key "dbtableprefix" in Command line code on line 1
check free space...
[...]

<--! Paste this in GitHub report -->

NextcloudPi diagnostics

NextcloudPi version  v1.55.4
NextcloudPi image
OS                   Armbian 25.2.3 bookworm \l . 6.12.22-current-meson64 (aarch64)
automount            no
USB devices          none
datadir              /media/myCloudDrive/ncdata/data
data in SD           no
data filesystem      btrfs
data disk usage      1.1T/3.7T
rootfs usage         7.6G/15G
swapfile             /var/swap
dbdir                /media/myCloudDrive/ncdatabase
Nextcloud check      ok
Nextcloud version    30.0.10.1
HTTPD service        up
PHP service          up
MariaDB service      up
Redis service        up
HPB service          up
Postfix service      up
Internet check       ok
Public IPv4          ***REMOVED SENSITIVE VALUE***
Public IPv6          ***REMOVED SENSITIVE VALUE***
Port 80              open
Port 443             open
IP                   ***REMOVED SENSITIVE VALUE***
Gateway              ***REMOVED SENSITIVE VALUE***
Interface            end0
Certificates         ***REMOVED SENSITIVE VALUE***
NAT loopback         no
Uptime               10days

Nextcloud configuration

{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": {
            "0": "localhost",
            "1": "192.168.69.35",
            "11": "2a01:e0a:b4b:cba0:xxxx",
            "14": "tropdelaque",
            "16": "nc.xxx.me",
            "3": "nc.xxx.me"
        },
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "30.0.10.1",
        "overwrite.cli.url": "https:\/\/nc.xxx.me\/",
        "overwriteprotocol": "https",
        "overwritehost": "nc.xxx.me",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0,
            "password": "***REMOVED SENSITIVE VALUE***"
        },
        "tempdirectory": "\/media\/myCloudDrive\/ncdata\/data\/tmp",
        "mail_smtpmode": "smtp",
        "mail_smtpauthtype": "LOGIN",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "preview_max_x": "2048",
        "preview_max_y": "2048",
        "jpeg_quality": "60",
        "maintenance": false,
        "logfile": "\/media\/myCloudDrive\/ncdata\/data\/nextcloud.log",
        "encryption.legacy_format_support": false,
        "htaccess.RewriteBase": "\/",
        "theme": "",
        "loglevel": "2",
        "log_type": "file",
        "mail_sendmailmode": "smtp",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "mail_smtpauth": 1,
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "data-fingerprint": "90a500532d96bc86f2b9dd2a35a6480d",
        "default_phone_region": "FR",
        "app_install_overwrite": [
            "files_opds"
        ],
        "maintenance_window_start": 3
    }
}

HTTPd logs

[Mon Apr 21 23:30:03.782193 2025] [mpm_event:notice] [pid 219390:tid 219390] AH00489: Apache/2.4.62 (Debian) OpenSSL/3.0.15 configured -- resuming normal operations
[Mon Apr 21 23:30:03.782285 2025] [core:notice] [pid 219390:tid 219390] AH00094: Command line: '/usr/sbin/apache2'

Database logs

tail: cannot open '/var/log/mysql/*.log' for reading: No such file or directory

Nextcloud logs

[a lot of DB errors that does not fit into the maximum size]