diff --git a/core/modules/outside_in/src/Block/BlockEntityOffCanvasForm.php b/core/modules/outside_in/src/Block/BlockEntityOffCanvasForm.php
index ee1a03626f..d2ff362bf8 100644
--- a/core/modules/outside_in/src/Block/BlockEntityOffCanvasForm.php
+++ b/core/modules/outside_in/src/Block/BlockEntityOffCanvasForm.php
@@ -170,7 +170,7 @@ public function submitFormDialog(array &$form, FormStateInterface $form_state) {
       }
       else {
         // Settings Tray always provides a destination.
-        throw new \Exception("No destination provide for Settings Tray form");
+        throw new \Exception("No destination provided by Settings Tray form");
       }
     }
     return $response->addCommand($command);
diff --git a/core/modules/outside_in/tests/modules/outside_in_test/src/Plugin/Block/ValidationErrorBlock.php b/core/modules/outside_in/tests/modules/outside_in_test/src/Plugin/Block/ValidationErrorBlock.php
index 095e2799e9..a78d75f399 100644
--- a/core/modules/outside_in/tests/modules/outside_in_test/src/Plugin/Block/ValidationErrorBlock.php
+++ b/core/modules/outside_in/tests/modules/outside_in_test/src/Plugin/Block/ValidationErrorBlock.php
@@ -19,7 +19,7 @@ class ValidationErrorBlock extends BlockBase {
    * {@inheritdoc}
    */
   public function build() {
-    return ['#markup' => "<span>\u{2600} \u{27A1} \u{1F415} \u{1F6B6} \u{1F570}</span>"];
+    return ['#markup' => '<span>If I had more time this would be very witty :(.</span>'];
   }
 
   /**
@@ -27,7 +27,7 @@ public function build() {
    */
   public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
     parent::validateConfigurationForm($form, $form_state);
-    $form_state->setError($form['label'], "\u{1F525} Sorry system error. Please save again. \u{1F61C}");
+    $form_state->setError($form['label'], 'Sorry system error. Please save again.');
   }
 
 }
diff --git a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
index 5c7a791533..4e519f6f8b 100644
--- a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
+++ b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
@@ -515,11 +515,10 @@ public function testValidationMessages() {
       $this->drupalGet('user');
       $this->enableEditMode();
       $this->openBlockForm($this->getBlockSelector($block));
-      // Use label that will trigger validation error.
-      // @see _outside_in_test_validate_title
-      $page->fillField('settings[label]', 'Block label');
       $page->pressButton('Save Block with validation error');
       $web_assert->assertWaitOnAjaxRequest();
+      // The outside_in_test_validation test plugin form always has a validation
+      // error.
       $web_assert->elementContains('css', '#drupal-off-canvas', 'Sorry system error. Please save again');
       $this->disableEditMode();
       $block->delete();