Fatal error after upgrade clen talk to 6.5

After upgrading to 6.5, with wp 6.1.1 + ocean wp, I have the following error breaking my website. I must desactivate CleanTalk to have a functionnal site, but no protection. Please help !
Thanks a lot

Richard

Fatal error: Uncaught TypeError: Unsupported operand types: int – ArrayObject in /homepages/14/d171065491/htdocs/hello/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-common.php:779 Stack trace: #0 /homepages/14/d171065491/htdocs/hello/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-public.php(619): ct_get_checkjs_value() #1 /homepages/14/d171065491/htdocs/hello/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-public.php(526): ct_add_hidden_fields(‘ct_checkjs’, false, true, true) #2 /homepages/14/d171065491/htdocs/hello/wp-includes/class-wp-hook.php(308): apbct_hook__wp_head__set_cookie__ct_checkjs(”) #3 /homepages/14/d171065491/htdocs/hello/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #4 /homepages/14/d171065491/htdocs/hello/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /homepages/14/d171065491/htdocs/hello/wp-includes/general-template.php(3043): do_action(‘wp_head’) #6 /homepages/14/d171065491/htdocs/hello/wp-content/themes/oceanwp/header.php(15): wp_head() #7 /homepages/14/d171065491/htdocs/hello/wp-includes/template.php(783): require_once(‘/homepages/14/d…’) #8 /homepages/14/d171065491/htdocs/hello/wp-includes/template.php(718): load_template(‘/homepages/14/d…’, true, Array) #9 /homepages/14/d171065491/htdocs/hello/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #10 /homepages/14/d171065491/htdocs/hello/wp-content/plugins/elementor/modules/page-templates/templates/header-footer.php(9): get_header() #11 /homepages/14/d171065491/htdocs/hello/wp-includes/template-loader.php(106): include(‘/homepages/14/d…’) #12 /homepages/14/d171065491/htdocs/hello/wp-blog-header.php(19): require_once(‘/homepages/14/d…’) #13 /homepages/14/d171065491/htdocs/hello/index.php(17): require(‘/homepages/14/d…’) #14 {main} thrown in /homepages/14/d171065491/htdocs/hello/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-common.php on line 779