Undefined offset: 1 in /output/service.php on line 3197/3198

HI,

my logs show:

PHP Notice:  Undefined offset: 1 in wp-content/plugins/schema-and-structured-data-for-wp/output/service.php on line 3197
PHP Notice:  Trying to access array offset on value of type null in wp-content/plugins/schema-and-structured-data-for-wp/output/service.php on line 3197
PHP Notice:  Undefined offset: 1 in wp-content/plugins/schema-and-structured-data-for-wp/output/service.php on line 3198
PHP Notice:  Trying to access array offset on value of type null in wp-content/plugins/schema-and-structured-data-for-wp/output/service.php on line 3198

Can you please fix it?

Toengel@Alex

The page I need help with: [log in to see the link]