diff --git a/app/Helpers/DateTimeHelpers.php b/app/Helpers/DateTimeHelpers.php
index f1e8b79..4f20b06 100644
--- a/app/Helpers/DateTimeHelpers.php
+++ b/app/Helpers/DateTimeHelpers.php
@@ -17,9 +17,10 @@ function formatTime(?string $time = null, ?string $format = 'H:i')
 }
 
 if (! function_exists('formatDateTime')) {
-    function formatDateTime(string $dateTime)
+    function formatDateTime(?string $dateTime = null)
     {
-        return Carbon::parse($dateTime)->translatedFormat('l, d M Y H:i:s');
+
+        return ! $dateTime ? '-' : Carbon::parse($dateTime)->translatedFormat('l, d M Y H:i:s');
     }
 }