Fixed too short folders

Author: le0daniel

src/Image/ImageEngine.php

@@ -107,7 +107,7 @@ private function getTmpPath(string $extension)
     public function serializeImage(ImageRepresentation $imageRepresentation): array
     {
         $signature = Signatures::sign($this->secret, $imageRepresentation->serialize());
-        return Strings::splitAtIndex($signature, 6);
+        return Strings::splitAtIndex($signature, 20);
     }
 
     public function getImageSignedString(string $signedString): ImageRepresentation

src/Utility/Images.php

@@ -49,7 +49,7 @@ public static function realPath(ImageRepresentation $imageRepresentation): strin
         }
 
         $baseCachePath = config('image-engine.original_cache_dir');
-        [$folder, $name] = Strings::splitAtIndex(md5($imageRepresentation->filePath), 6);
+        [$folder, $name] = Strings::splitAtIndex(md5($imageRepresentation->filePath), 20);
         $cacheFilePath = "{$baseCachePath}/{$folder}/{$name}.{$imageRepresentation->extension}";
 
         Directories::makeRecursive(dirname($cacheFilePath));