diff --git a/vendor/imagekit/imagekit/src/ImageKit/Url/Url.php
--- a/vendor/imagekit/imagekit/src/ImageKit/Url/Url.php
+++ b/vendor/imagekit/imagekit/src/ImageKit/Url/Url.php	(date 1669607270168)
@@ -194,7 +194,7 @@
                     $transformationUtils = getTransformKeyValueDelimiter();
                     $finalres = $transformKey;
                     $finalres .= $transformationUtils;
-                    if (strpos($value, '/') !== false) {
+                    if ($value && strpos($value, '/') !== false) {
                         $finalres .= str_replace('/', '@@', $value);
                     } else {
                         $finalres .= $value;