erorr 500 on fastcomet hosting

Hi, today I discovered that the websites was giving error 500, so then I checked the error log (and for now I patched it deleting the folder named GDPR into the plugins foler):

11-Jul-2018 22:42:59 UTC] PHP Fatal error: Uncaught Error: Call to undefined function is_user_logged_in() in /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/post.php:2250
Stack trace:
#0 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/post.php(6104): _count_posts_cache_key('telemetry', 'readable')
#1 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/class-wp-hook.php(286): _transition_post_status('publish', 'new', Object(WP_Post))
#2 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array)
#3 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#4 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/post.php(4095): do_action('transition_post...', 'publish', 'new', Object(WP_Post))
#5 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/post.php(3555): wp_transition_post_status('publish', 'new', Object(WP_Post))
#6 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-content/plugins/gdpr/admin/class-gdpr-telemetry.php(151): wp_insert_post(Array)
#7 /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-content/plugins/gdpr/admin/class-gdpr-telemetry.php(130): G in /home/MY-USER-ACCOUNT/MY-DOMAIN-NAME/wp-includes/post.php on line 2250

The issue is that is_user_logged_in is a pluggable function, and is therefore loaded after this plugin logic is called.

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