PHP Fatal error: Uncaught Error: Call to a member function get_quota() on null in plugins/account_details/account_details.php:133

[AK666]

roundcubemail-1.6.1

PHP Fatal error:  Uncaught Error: Call to a member function get_quota() on null in /srv/www/RoundCube/htdocs/plugins/account_details/account_details.php:133
Stack trace:
#0 /srv/www/RoundCube/htdocs/program/include/rcmail_output_html.php(1484): account_details->infohtml(Array)
#1 [internal function]: rcmail_output_html->xml_command(Array)
#2 /srv/www/RoundCube/htdocs/program/include/rcmail_output_html.php(1322): preg_replace_callback('/<roundcube:([-...', Array, '<roundcube:incl...')
#3 /srv/www/RoundCube/htdocs/program/include/rcmail_output_html.php(825): rcmail_output_html->parse_xml('<roundcube:incl...')
#4 /srv/www/RoundCube/htdocs/program/include/rcmail_output_html.php(654): rcmail_output_html->parse('plugin', false)
#5 /srv/www/RoundCube/htdocs/plugins/account_details/account_details.php(52): rcmail_output_html->send('plugin')
#6 /srv/www/RoundCube/htdocs/program/lib/Roundcube/rcube_plugin_api.php(575): account_details->infostep()
#7 /srv/www/RoundCube/htdocs/program/include/rcmail.php(255): rcube_plugin_api->exec_action in /srv/www/RoundCube/htdocs/plugins/account_details/account_details.php on line 133

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// libc-client2007e

/account_details/config.inc.php
$account_details_config['enable_quota'] = false;

[AnViKo-RD]

LINE 131

// $imap = $this->rc->imap;
$imap = $this->rc->storage;