diff --git a/src/Entity/Embargo.php b/src/Entity/Embargo.php
index 89349b8..30b68e9 100644
--- a/src/Entity/Embargo.php
+++ b/src/Entity/Embargo.php
@@ -397,7 +397,10 @@ public function getCacheMaxAge() {
    * {@inheritdoc}
    */
   public function getCacheTags() {
-    $tags = Cache::mergeTags(parent::getCacheTags(), $this->getEmbargoedNode()->getCacheTags());
+    $tags = parent::getCacheTags();
+    if ($node = $this->getEmbargoedNode()) {
+      $tags = Cache::mergeTags($tags, $node->getCacheTags());
+    }
 
     if ($this->getExemptIps()) {
       $tags = Cache::mergeTags($tags, $this->getExemptIps()->getCacheTags());
@@ -411,9 +414,11 @@ public function getCacheTags() {
   public function getCacheContexts() {
     $contexts = Cache::mergeContexts(
       parent::getCacheContexts(),
-      $this->getEmbargoedNode()->getCacheContexts(),
       ['user.embargo__has_exemption'],
     );
+    if ($node = $this->getEmbargoedNode()) {
+      $contexts = Cache::mergeContexts($contexts, $node->getCacheContexts());
+    }
 
     if ($this->getExemptIps()) {
       $contexts = Cache::mergeContexts($contexts, $this->getExemptIps()->getCacheContexts());
diff --git a/src/Plugin/search_api/processor/EmbargoJoinProcessor.php b/src/Plugin/search_api/processor/EmbargoJoinProcessor.php
index 90f4cf0..4083457 100644
--- a/src/Plugin/search_api/processor/EmbargoJoinProcessor.php
+++ b/src/Plugin/search_api/processor/EmbargoJoinProcessor.php
@@ -218,6 +218,12 @@ protected function doAddNodeField(ItemInterface $item, EntityInterface $entity)
    */
   protected function doAddEmbargoField(ItemInterface $item, EntityInterface $entity) : void {
     assert($entity instanceof EmbargoInterface);
+
+    // Early return if there is no embargoed node.
+    if ($entity->getEmbargoedNode() === NULL) {
+      return;
+    }
+
     $paths = match ($entity->getEmbargoType()) {
       EmbargoInterface::EMBARGO_TYPE_FILE => [static::EMBARGO_FIELD_FILE],
       EmbargoInterface::EMBARGO_TYPE_NODE => [static::EMBARGO_FIELD_NODE, static::EMBARGO_FIELD_FILE],