Undefined offset notice

Hi,
I activated my debug to find an issue on my site. I fixed it, but I found also the below Notices/Warnings. As they might be linked to your plugin, just notifying.
[05-May-2019 13:08:24 UTC] PHP Notice: Undefined offset: 1 in /home/…/wp-content/plugins/facebook-auto-publish/vendor/facebook/graph-sdk/src/Facebook/Http/GraphRawResponse.php on line 108
[05-May-2019 13:08:24 UTC] PHP Warning: count(): Parameter must be an array or an object that implements Countable in /home/…/wp-includes/post-template.php on line 284
[05-May-2019 13:08:24 UTC] PHP Notice: Trying to get property ‘post_content’ of non-object in /home/…/wp-includes/post-template.php on line 298

I’m running WordPress 4.9.10 and PHP 7.2.17