plugin error

i have installed the plugin and i get the below error. can you assist on this?

Fatal error: Uncaught Error: Object of class WP_Error could not be converted to string in /home/customer/www/lookscosy.com/public_html/wp-content/plugins/different-menus-in-different-pages/admin/partials/TabItems/Taxonomies.php:60 Stack trace: #0 /home/customer/www/lookscosy.com/public_html/wp-content/plugins/different-menus-in-different-pages/admin/partials/tabOrganizer.php(32): TabItems\Taxonomies\TabItem->tabData() #1 /home/customer/www/lookscosy.com/public_html/wp-content/plugins/different-menus-in-different-pages/admin/partials/tabOrganizer.php(227): TabOrganizer->tabItems() #2 /home/customer/www/lookscosy.com/public_html/wp-content/plugins/different-menus-in-different-pages/admin/partials/tabOrganizer.php(292): TabOrganizer->differentMenusSettingsTab() #3 /home/customer/www/lookscosy.com/public_html/wp-includes/class-wp-hook.php(307): TabOrganizer->implementSettingsTabs(”) #4 /home/customer/www/lookscosy.com/public_html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(”, Array) #5 /home/customer/www/look in /home/customer/www/lookscosy.com/public_html/wp-content/plugins/different-menus-in-different-pages/admin/partials/TabItems/Taxonomies.php on line 60