Support intro
Sorry to hear you’re facing problems. 
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Getting help
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The Basics
- Nextcloud Server version (e.g., 29.x.x):
restoring from 26.? to 30.0.1
- Operating system and version (e.g., Ubuntu 24.04):
Debian 12
- Web server and version (e.g, Apache 2.4.25):
replace me
- Reverse proxy and version _(e.g. nginx 1.27.2)
replace me
- PHP version (e.g, 8.3):
8.3, but error says This version of Nextcloud is not compatible with PHP>=8.3. You are currently running 8.3.16.
- Is this the first time you’ve seen this error? (Yes / No):
yes
- When did this problem seem to first start?
power outage killed the VM so restoring from new Debian image, using curl installer
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
NCP curl
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
no
Summary of the issue you are facing:
NCP installs and runs fine from curl installer, then PHP error upon restoring from older NCP backup
Secondary but noteworthy is that the data directory seems to be moved to:
/var/www/nextcloud/data/data
Steps to replicate it (hint: details matter!):
-
I do a clean install of Debian 12, then make a new NextCloud instance using the curl installer from the GitHub. It installs NCP 1.55.3 and NextCloud 30.0.1 without issue.
-
Mount the host share backups folder, copy it to the guest’s local storage. Restore using the backup .tar.gz. Doesn’t seem to matter if it’s through the web interface or ncp-config
-
After the restore finishes, it ends with error:
“This version of Nextcloud is not compatible with PHP>=8.3.
You are currently running 8.3.16.” -
Then I can’t reinitialise, upgrade or downgrade NCP from web or the ncp-config via Terminal due to PHP version errors. I tried downgrading PHP to 8.2 following instructions online, but it only seems to apply to the command line and not the actual website.
Log entries
Nextcloud
Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.
nc-restore ] (Sun 02 Feb 2025 14:51:12 AEDT)
check free space...
extracting backup file /home/graeme/nextcloud-bkp_20250129_1738152002.tar.gz...
restore files...
restore database...
backing up existing /var/www/nextcloud/data/data to /var/www/nextcloud/data/data-2025-02-02T1738469895...
restore datadir to /var/www/nextcloud/data/data...
This version of Nextcloud is not compatible with PHP>=8.3.<br/>You are currently running 8.3.16.Cleanup...
[ nc-update-nextcloud ] (Sun 02 Feb 2025 16:46:50 AEDT)
Running as unit: ncp-update-nc.service
Failed to start ncp-update-nc
Nextcloud is currently down
× ncp-update-nc.service - /usr/bin/bash -c set -o pipefail; DBG='' /usr/local/bin/ncp-update-nc.d/update-nc.sh '0' |& tee /var/log/ncp-update-nc.log
Loaded: loaded (/run/systemd/transient/ncp-update-nc.service; transient)
Transient: yes
Active: failed (Result: exit-code) since Sun 2025-02-02 16:46:50 AEDT; 844ms ago
Process: 110224 ExecStart=/usr/bin/bash -c set -o pipefail; DBG='' /usr/local/bin/ncp-update-nc.d/update-nc.sh '0' |& tee /var/log/ncp-update-nc.log (code=exited, status=1/FAILURE)
Main PID: 110224 (code=exited, status=1/FAILURE)
CPU: 164ms
Feb 02 16:46:50 nextcloudpi sudo[110245]: root : PWD=/var/www ; USER=www-data ; COMMAND=/usr/bin/php -r 'include("/var/www/nextcloud/config/config.php"); echo($CONFIG["datadirectory"]);'
Feb 02 16:46:50 nextcloudpi sudo[110245]: pam_unix(sudo:session): session opened for user www-data(uid=33) by (uid=0)
Feb 02 16:46:50 nextcloudpi sudo[110245]: pam_unix(sudo:session): session closed for user www-data
Feb 02 16:46:50 nextcloudpi sudo[110248]: root : PWD=/var/www ; USER=www-data ; COMMAND=/usr/bin/php /var/www/nextcloud/occ status
Feb 02 16:46:50 nextcloudpi sudo[110248]: pam_unix(sudo:session): session opened for user www-data(uid=33) by (uid=0)
Feb 02 16:46:50 nextcloudpi sudo[110248]: pam_unix(sudo:session): session closed for user www-data
Feb 02 16:46:50 nextcloudpi bash[110226]: Nextcloud is currently down
Feb 02 16:46:50 nextcloudpi systemd[1]: ncp-update-nc.service: Main process exited, code=exited, status=1/FAILURE
Feb 02 16:46:50 nextcloudpi systemd[1]: ncp-update-nc.service: Failed with result 'exit-code'.
Feb 02 16:46:50 nextcloudpi systemd[1]: Failed to start ncp-update-nc.service - /usr/bin/bash -c set -o pipefail; DBG='' /usr/local/bin/ncp-update-nc.d/update-nc.sh '0' |& tee /var/log/ncp-update-nc.log.
[ nc-init ] (Sun 02 Feb 2025 16:51:48 AEDT)
Setting up a clean Nextcloud instance... wait until message 'NC init done'
Setting up database...
Setting up Nextcloud...
This version of Nextcloud is not compatible with PHP>=8.3.<br/>You are currently running 8.3.16.This version of Nextcloud is not compatible with PHP>=8.3.<br/>You are currently running 8.3.16.sed: can't >
This version of Nextcloud is not compatible with PHP>=8.3.<br/>You are currently running 8.3.16.This version of Nextcloud is not compatible with PHP>=8.3.<br/>You are currently running 8.3.16.This versio>
Web Browser
If the problem is related to the Web interface, open your browser inspector Console and Network tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.
PASTE
Web server / Reverse Proxy
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
Gathering information...
PHP Warning: Undefined variable $CONFIG in Command line code on line 1
PHP Warning: Trying to access array offset on null in Command line code on line 1
NextcloudPi version v1.55.3
NextcloudPi image NextcloudPi_02-02-25
OS Debian GNU/Linux 12. 6.1.0-30-arm64 (aarch64)
automount no
USB devices sr0
datadir (doesn't exist)
rootfs usage 284G/884G
swapfile /var/swap
dbdir /var/lib/mysql
Nextcloud check error
HTTPD service up
PHP service up
MariaDB service up
Redis service up
HPB service down
Postfix service up
Internet check ok
Public IPv4 xxx.xxx.xxx.xxx
Public IPv6 not found
Port 80 open
Port 443 open
IP 192.168.xxx.xxx
Gateway 192.168.xxx.xxx
Interface enp0s1
Certificates none
NAT loopback no
Uptime 5:44
PHP Warning: Undefined variable $CONFIG in Command line code on line 1
PHP Warning: Trying to access array offset on null in Command line code on line 1
You should run Lets Encrypt for trusted encrypted access
You should enable automount to use your plugged in USB drive
Done. Press any key...
Apps
The output of occ app:list (if possible).
Tips for increasing the likelihood of a response
- Use the
preformatted textformatting option in the editor for all log entries and configuration output. - If screenshots are useful, feel free to include them.
- If possible, also include key error output in text form so it can be searched for.
- Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.