Fatal error: Uncaught ValueError: Path cannot be empty in PHP [closed]

I created a web application using PHP. In here i got a error while i am uploading images. I got this error on only some devices(mobile and pc). Error is mentioned in below. Please give me instructions to fix this.
Fatal error: Uncaught ValueError: Path cannot be empty in C:wamp64wwwBungalowSignupbackend.php on line 39
(!)ValueError: Path cannot be empty in C;lwamp64wwwBungalowSignupbackend.php on line 39

I want a help to fix this error.