I have a problem on my hub. I can't change some page's pdl via PDL Editor.
When I try to change it, my window turned white and didn't show anything.
but it's only several kinds of page, only channel, and network.
What should I do?
This is a log at that time.
2018/11/21 20:30:50 [error] 7670#7670: *1860 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Call to undefined function Zotlabs\Lib\Get() in /var/www/hubzilla/Zotlabs/Lib/PConfig.php:141
Stack trace:
#0 /var/www/hubzilla/include/config.php(59): Zotlabs\Lib\PConfig::Set(2, 'system', 'mod_channel.pdl', '[region=aside][...')
#1 /var/www/hubzilla/Zotlabs/Module/Pdledit.php(24): set_pconfig(2, 'system', 'mod_channel.pdl', '[region=aside][...')
#2 /var/www/hubzilla/Zotlabs/Web/Router.php(273): Zotlabs\Module\Pdledit->post()
#3 /var/www/hubzilla/Zotlabs/Web/WebServer.php(115): Zotlabs\Web\Router->Dispatch()
#4 /var/www/hubzilla/index.php(14): Zotlabs\Web\WebServer->run()
#5 {main}
thrown in /var/www/hubzilla/Zotlabs/Lib/PConfig.php on line 141" while reading response header from upstream, client: (my address), server: plus.haruk.in, request: "POST /pdledit HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.2-fpm.sock:", host: "plus.haruk.in", referrer: "https://plus.haruk.in/pdledit/channel"