Plugin crashes when editing post and pages

First of all, your plugin has been a great addition to our website and we absolutely love it. We have had no problems until recently when trying to edit a page, I was re-directed to the dashboard where there was an error message for your plugin across the screen.

“All-in-one has been disabled due to an error”

Here are the error details:

Argument 4 passed to Ai1ec_Content_Filters::display_trash_link() must be an instance of WP_User, none given, called in /var/lib/wordpress/wp-content/plugins/all-in-one-event-calendar/lib/bootstrap/registry/object.php on line 213 and defined
Error Details:
#0 /var/lib/wordpress/wp-content/plugins/all-in-one-event-calendar/lib/content/filter.php(80): Ai1ec_Exception_Handler->handle_error(4096, ‘Argument 4 pass…’, ‘/var/lib/wordpr…’, 80, Array)
#1 /var/lib/wordpress/wp-content/plugins/all-in-one-event-calendar/lib/bootstrap/registry/object.php(213): Ai1ec_Content_Filters->display_trash_link(Array, Array, Array)
#2 /var/lib/wordpress/wp-content/plugins/all-in-one-event-calendar/lib/event/callback/abstract.php(59): Ai1ec_Registry_Object->dispatch(‘content.filter’, ‘display_trash_l…’, Array)
#3 [internal function]: Ai1ec_Event_Callback_Abstract->run(Array, Array, Array)
#4 /usr/share/wordpress/wp-includes/plugin.php(173): call_user_func_array(Array, Array)
#5 /usr/share/wordpress/wp-includes/capabilities.php(939): apply_filters(‘user_has_cap’, Array, Array, Array)
#6 [internal function]: WP_User->has_cap(‘unfiltered_html’)
#7 /usr/share/wordpress/wp-includes/capabilities.php(1289): call_user_func_array(Array, Array)
#8 /usr/share/wordpress/wp-includes/kses.php(1388): current_user_can(‘unfiltered_html’)
#9 [internal function]: kses_init(”)
#10 /usr/share/wordpress/wp-includes/plugin.php(406): call_user_func_array(‘kses_init’, Array)
#11 /usr/share/wordpress/wp-includes/pluggable.php(37): do_action(‘set_current_use…’)
#12 /usr/share/wordpress/wp-includes/pluggable.php(107): wp_set_current_user(2)
#13 /usr/share/wordpress/wp-includes/pluggable.php(54): get_currentuserinfo()
#14 /usr/share/wordpress/wp-includes/capabilities.php(1281): wp_get_current_user()
#15 /var/lib/wordpress/wp-content/themes/statfort/functions.php(1098): current_user_can(‘administrator’)
#16 /usr/share/wordpress/wp-settings.php(293): include(‘/var/lib/wordpr…’)
#17 /usr/share/wordpress/wp-config.php(59): require_once(‘/usr/share/word…’)
#18 /usr/share/wordpress/wp-load.php(29): require_once(‘/usr/share/word…’)
#19 /usr/share/wordpress/wp-admin/admin.php(30): require_once(‘/usr/share/word…’)
#20 /usr/share/wordpress/wp-admin/post.php(12): require_once(‘/usr/share/word…’)
#21 {main}

Request Uri: /wp/wp-admin/post.php?post=9175&action=edit

Please advise.

Cheers,

David

https://wordpress.org/plugins/all-in-one-event-calendar/