fix: Image driver check using the wrong variable

Author: CodeWithKyrian

src/Transformers.php

@@ -154,7 +154,7 @@ public static function getImageDriver(): ?ImageDriver
     {
         self::ensureInitialized();
 
-        if (!isset($imageDriver)) {
+        if (!isset(self::$imageDriver)) {
             throw new RuntimeException('Image driver not set. Please set the image driver using `Transformers::setup()->setImageDriver()`');
         }
 

src/Utils/LibsChecker.php

@@ -9,9 +9,9 @@
 
 class LibsChecker
 {
-    public static function check($event): void
+    public static function check(): void
     {
-        $vendorDir = $event->getComposer()->getConfig()->get('vendor-dir');
+        $vendorDir = basePath('vendor');
         require $vendorDir.'/autoload.php';
 
         $libsDir = basePath('libs');