diff --git a/src/Extensions/ShareDraftContentFileShortcodeProviderExtension.php b/src/Extensions/ShareDraftContentFileShortcodeProviderExtension.php
index aef709c..3651302 100644
--- a/src/Extensions/ShareDraftContentFileShortcodeProviderExtension.php
+++ b/src/Extensions/ShareDraftContentFileShortcodeProviderExtension.php
@@ -20,16 +20,24 @@ public function updateGrant(bool &$grant, ?File $record = null, ?array $args = n
         if ($grant) {
             return;
         }
-        $session = $session = Controller::curr()->getRequest()->getSession();
+        if (!Controller::has_curr()) {
+            return;
+        }
+
+        $session = Controller::curr()->getRequest()->getSession();
+
         if (!$session) {
             return;
         }
+
         if (!ShareDraftController::getIsViewingPreview()) {
             return;
         }
+
         if (!$record && $args) {
             $record = FileShortcodeProvider::find_shortcode_record($args);
         }
+
         if ($record) {
             $grant = !$record->hasRestrictedAccess();
         }