For a Nextcloud 16.0.4 installationRunning a backup through the web interface succeed.But when the backup is triggered from cron, we receive an email with the following message when the backup start :
PHP Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0
The backup seems to succeed as it create a file with a size that seems to be right. But the backup file is a hidden file (starting with a dot) and then is not shown in the web interface.
No mail is sent when the backup finished.
Where can we have a look to understand the problem ? Is there a log file somewhere ?
Is the generated backup a good archive or is it not complete ?
Thanks in advance for any tips.
Philippe