Newbie: Not Importing

Greetings, trying to import my first articles. Getting X error. Logs show the below error message [24-Aug-2022 17:34:14 UTC] [FATAL] Exit error: Uncaught TypeError: explode(): Argument #2 ($string) must be of type string, array given in /var/www/vhosts/.../wp-content/plugins/newsomatic-news-post-generator/newsomatic-news-post-generator.php:6000 Stack trace: #0 /var/www/vhosts/.../wp-content/plugins/newsomatic-news-post-generator/newsomatic-news-post-generator.php(6000): explode() #1 /var/www/vhosts/.../wp-content/plugins/newsomatic-news-post-generator/newsomatic-news-post-generator.php(2365): newsomatic_run_rule() #2 /var/www/vhosts/.../wp-includes/class-wp-hook.php(307): newsomatic_run_my_action_callback() #3 /var/www/vhosts/.../wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters() #4 /var/www/vhosts/.../wp-includes/plugin.php(476): WP_Hook->do_action() #5 /var/www/vhosts/.../wp-admin/admin-ajax.php(187): do_action() #6 {main} thrown, file: /var/www/vhosts/..../wp-content/plugins/newsomatic-news-post-generator/newsomatic-news-post-generator.php, line: 6000 - rule ID: 0!