Updated Drupal to 8.6. This goes with the following updates because it's possible...
[yaffs-website] / web / core / lib / Drupal / Core / PageCache / RequestPolicy /
drwxr-xr-x   ..
-rw-r--r-- 806 CommandLineOrUnsafeMethod.php
-rw-r--r-- 1306 NoSessionOpen.php