getting 500 - internal server error after creating filter

[marchello]

 Hi all,
I'm trying to use roundcube and it is critical for me to have filtering rules. I am using squirrelmail and it has filters, but the UI is not mobile-friendly. Roundcube has mobile-friendly themes, so I would like to use it. But when I installed filters and created one test filter, it started to show 500 - internal server error. When I delete filter, it works fine again. I will put all needed technical details here. Please advise.

Upd:

Roundcube Webmail 1.1.4
additional_message_headers   1.2.0   GPLv2   
archive   2.3   GPLv3+   
Attachment Reminder   1.1   GPLv3+   
filesystem_attachments   1.0   GPLv3+   
filters   2.1.4   GNU GPLv3+   
hide_blockquote   1.0   GPLv3+   
identity_select   1.0   GPLv3+   
jqueryui   1.10.4   GPLv3+   
markasjunk   1.2   GPLv3+   
mobile   0.4.5   GPL-3.0+
newmail_notifier   0.7   GPLv3+   
new_user_dialog   2.1   GPLv3+   
new_user_identity   1.1   GPLv3+   
show_additional_headers   2.0   GPLv3+   
squirrelmail_usercopy   1.4   GPLv3+   
userinfo   1.0   GPLv3+   
vcard_attachments   3.2   GPLv3+   
zipdownload   3.0   GPLv3+   

$ apache2 -v
Server version: Apache/2.4.7 (Ubuntu)
Server built:   Apr  3 2019 18:04:25

$ php -v
PHP 5.5.9-1ubuntu4.29 (cli) (built: Apr 22 2019 18:33:52)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
    with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies

$ mysql -V
mysql  Ver 14.14 Distrib 5.5.62, for debian-linux-gnu (x86_64) using readline 6.3

Upd: error screenshot (it doesn't want to display my inbox messages after filter is created)


filter example (very simple as for me)

Please let me know what else do you need to advise.

Upd: opened github issue: https://github.com/6ec123321/filters/issues/50

Upd2: Fixed after upgrade to newest php and roundcube versions.