diff --git a/src/Plugin/DisplayVariant/PanelsDisplayVariant.php b/src/Plugin/DisplayVariant/PanelsDisplayVariant.php
index e2286e4..eb664c3 100644
--- a/src/Plugin/DisplayVariant/PanelsDisplayVariant.php
+++ b/src/Plugin/DisplayVariant/PanelsDisplayVariant.php
@@ -562,4 +562,18 @@ class PanelsDisplayVariant extends BlockDisplayVariant implements PluginWizardIn
     return $data;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function __sleep() {
+    $vars = parent::__sleep();
+
+    // Gathered contexts objects should not be serialized.
+    if (($key = array_search('contexts', $vars)) !== FALSE) {
+      unset($vars[$key]);
+    }
+
+    return $vars;
+  }
+
 }