Error after update

Hi, after updating Tutor LMS to the newest version, I get this error:

Chyba typu E_ERROR bola spôsobená v riadku 114 súboru /var/www112/p8690/trader20.sk/sub/new/wp-content/plugins/tutor/classes/Course_Settings_Tabs.php. Chybové hlásenie: Uncaught TypeError: Cannot access offset of type string on string in /var/www112/p8690/trader20.sk/sub/new/wp-content/plugins/tutor/classes/Course_Settings_Tabs.php:114
Stack trace:
#0 /var/www112/p8690/trader20.sk/sub/new/wp-content/plugins/tutor/classes/Course_Settings_Tabs.php(146): TUTOR\Course_Settings_Tabs->get_default_args()
#1 /var/www112/p8690/trader20.sk/sub/new/wp-admin/includes/template.php(1443): TUTOR\Course_Settings_Tabs->display()
#2 /var/www112/p8690/trader20.sk/sub/new/wp-admin/edit-form-advanced.php(711): do_meta_boxes()
#3 /var/www112/p8690/trader20.sk/sub/new/wp-admin/post.php(206): require(‘…’)
#4 {main}
  thrown

Thank you for your help.

Cheers,
Jakub

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