Image Upload Not working only for some of the mobile devices. "Failed to open stream: is a directory"

Image Upload Not working only for some of the mobile devices. The same link when opened in desktop or iPhone and some android devices its working fine. But for some mobiles all the browsers its not working and giving the below error.

"Failed to open stream: is a directory"

The code to save image is as follows :-

$data['scan_file']->storeAs('scan_file', "facetest-".str_replace(' ', '',$_FILES["scan_file"]["name"]));

via Chebli Mohamed