.../Functional/EntityResource/Comment/CommentResourceTestBase.php    | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php
index d9758db..7205f9c 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php
@@ -229,10 +229,11 @@ public function testPostDxWithoutCriticalBaseFields() {
     // @todo Remove the try/catch in favor of the two commented lines in https://www.drupal.org/node/2820364.
     try {
       $response = $this->request('POST', $url, $request_options);
-      var_dump($response->getBody()->getContents()); // @todo REMOVE, debug output only.
-      $this->fail('Request did not result in an exception.');
+      // This happens on DrupalCI.
+      $this->assertSame(500, $response->getStatusCode());
     }
     catch (\Exception $e) {
+      // This happens on Wim's local machine.
       $this->assertSame("Error: Call to a member function get() on null\nDrupal\\comment\\Plugin\\Validation\\Constraint\\CommentNameConstraintValidator->getAnonymousContactDetailsSetting()() (Line: 96)\n", $e->getMessage());
     }
     //$response = $this->request('POST', $url, $request_options);