wordpress error

hi when i activate the plugin into my website i got this error: Um erro do tipo E_ERROR foi causado na linha 373 do arquivo (an error type E on line 373) ***/public_html/wp-content/plugins/jivochat/class-jivosite.php. Mensagem de erro: Uncaught Error: Cannot use object of type WP_Error as array in ***/public_html/wp-content/plugins/jivochat/class-jivosite.php:373 Stack trace: #0 ***/public_html/wp-content/plugins/jivochat/class-jivosite.php(352): Jivosite->fetch_supported_languages() #1 ***/public_html/wp-content/plugins/jivochat/class-jivosite.php(257): Jivosite->get_language_list() #2 ***/public_html/wp-content/plugins/jivochat/class-jivosite.php(101): Jivosite->render() #3 ***/public_html/wp-includes/class-wp-hook.php(308): jivosite_preferences('') #4 ***/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #5 ***/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 ***/public_html/wp-admin/admin.php(259): do_action('toplevel_page_c...') #7 {main} thrown