[11.x tag manager] SyntaxError: Unexpected token =
[11.x] Moving sub album at the beginning/end of the list
[11.x] remove cache directory size calculation from dashboard
[11.x admin/tags] filter does not work with uppercase
[11.x, tag manager] missing success message after orphan deletion
curly braces is deprecated in profile.php
Dysfunctional keywords/tags admin page in 11.2.0
Can't delete orphan tag
[11.2] admin dashboard is unavailable
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We recommend the automatic upgrade. If you're running version 2.2+, Piwigo will tell you which plugins may be not compatible with Piwigo 11 before upgrade.
If you're running Piwigo 11.x you can also download the 11.x_to_11.3.0.zip archive that contains all new and modified files. Once you have extracted the files, transfer them onto your web server with a FTP client over your Piwigo 11.x installation. No database upgrade is required.
If you are running a version older than 11 and do not want to use the automatic upgrade, then follow the manual upgrade.