diff --git a/system/src/Grav/Framework/Form/Traits/FormTrait.php b/system/src/Grav/Framework/Form/Traits/FormTrait.php
index 609e1c122..af42ca0b1 100644
--- a/system/src/Grav/Framework/Form/Traits/FormTrait.php
+++ b/system/src/Grav/Framework/Form/Traits/FormTrait.php
@@ -354,6 +354,10 @@ trait FormTrait
     public function getAllFlashes(): array
     {
         $folder = FormFlash::getSessionTmpDir($this->getFlashId());
+        if (!is_dir($folder)) {
+            return [];
+        }
+
         $name = $this->getName();
         $id = $this->getFlashId();