TypeError thrown

Argument 1 passed to ithoughts\v5_0\Toolbox::get_permalink_light() must be an instance of WP_Post, null given, called in /home/clients/0fc12c66dff9479ef35304ee9f5be322/web/wp-content/plugins/ithoughts-tooltip-glossary/class/shortcode/class-glossary.php on line 217