kolab/calendar in RC 1.3.6 and error 500 (PHP Fatal error:...)

[Josef Karliak]

  Hi there,
  I've installed kolab/calendar plugin with its requirement, when I click on Calendar in the RC, I get an error 500.
  In the RC log I see :
[28-Jun-2018 06:37:23 UTC] PHP Fatal error:  Uncaught Error: Call to protected method rcmail_output_html::search_form() from context 'calendar_ui' in /srv/www/roundcubemail/plugins/calendar/lib/calendar_ui.php:817
Stack trace:
#0 /srv/www/roundcubemail/program/include/rcmail_output_html.php(1145): calendar_ui->resources_search_form(Array)
#1 [internal function]: rcmail_output_html->xml_command(Array)
#2 /srv/www/roundcubemail/program/include/rcmail_output_html.php(1013): preg_replace_callback('/<roundcube:([-...', Array, '<roundcube:obje...')
#3 /srv/www/roundcubemail/program/include/rcmail_output_html.php(634): rcmail_output_html->parse_xml('<roundcube:obje...')
#4 /srv/www/roundcubemail/program/include/rcmail_output_html.php(488): rcmail_output_html->parse('calendar', false)
#5 /srv/www/roundcubemail/plugins/calendar/calendar.php(338): rcmail_output_html->send('calendar.calend...')
#6 /usr/share/php7/Roundcube/rcube_plugin_api.php(493): calendar->calendar_view()
#7 /srv/www/roundcubemail/index.php(295): rcube_plugin_api->exec_action('calendar.index')
in /srv/www/roundcubemail/plugins/calendar/lib/calendar_ui.php on line 817


  Running on PHP 7 and apache 2.4

  What did I missed ?
  Thanks and best regards
  J.Karliak

[alec]

Looks like this version of the plugin works only with git-master version of Roundcube.

[Josef Karliak]

Damn it,
I see you're right. Co is there some other calendar plugin for non-git version ? I've installation from Opensuse repo, so the uptade is installet automatically.
Thanks and best regards
J.Karliak

[patwoconnell]

I encountered exactly the same error with Roundcube 1.3.8 on a Raspberry Pi that to date only uses PHP 7.0.  Being a Roundcube Newbe, can one of you explain how you can see it was a version mismatch?
If you solved this error, was it reinstalling to the git-master version?

[patwoconnell]

Apologies if answering one's own post is bad form, but I found the answer.

Just comment out the offending line in ./plugins/calendar/lib/calendar_ui.php

So far it works fine.