Hello/Hi/Greetings,

I setup another Piwigo gallery for experimentation/demonstration purposes. The server needs to run PHP 5.6 for compatibility reasons with other software.

I am getting the "datatables warning .... invalid JSON response" message in the user panel

I checked the browser debugger, and the JSON response has PHP warnings in it:

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in .../include/common.inc.php on line 126

(several times for various lines in code)

I thought, OK no problem, I'll set the time zone. So I created a PHP.INI file and put in

date.timezone = "America/Vancouver"

If I run the phpinfo() command, the default timezone is properly reported as "America/Vancouver"

But the PHP warnings persist in Piwigo.

If I switch to PHP 7, then the problem goes away.

Any ideas please?

Environment

    Piwigo 2.10.2 Check for upgrade
    Operating system: Linux
    PHP: 5.6.40 (Show info) [2020-06-11 16:09:07]
    MySQL: 5.7.30 [2020-06-11 19:09:07]
    Graphics Library: ImageMagick 6.9.4-10