fix: files should always be ignored as they cannot be Instances

src/InstanceIterator.php

@@ -28,9 +28,15 @@ class InstanceIterator extends \FilesystemIterator
 	
 	public function current()
 	{
+		// skip files
+		while (! parent::current()->isDir()) {
+			parent::next();
+		}
+		
 		if (!isset($this->instance)) {
 			$this->instance = new Instance(parent::current());
 		}
+		
 		// var_dump($this);
 		return $this->instance;
 	}