The new EntityContext (and possibly pre-existing code) don't provide very informative errors if the entity or bundle doesn't exist. (Run entity.feature against aa Drupal 8 installation using the Minimal profile to see examples).
Instead you get a lot of:
Catchable Fatal Error: Object of class stdClass could not be converted to string in vendor/drupal/drupal-driver/src/Drupal/Driver/Cores/Drupal8.php line 438
The new EntityContext (and possibly pre-existing code) don't provide very informative errors if the entity or bundle doesn't exist. (Run entity.feature against aa Drupal 8 installation using the Minimal profile to see examples).
Instead you get a lot of: Catchable Fatal Error: Object of class stdClass could not be converted to string in vendor/drupal/drupal-driver/src/Drupal/Driver/Cores/Drupal8.php line 438