Error Uploading Excel File using store function in Laravel 5.4

Laravel Code Used $path = $request->file('import_file')->store('public');

Error:

fopen(C:\Users\sandeep\maxo\storage\app\public/K4oIHMXveyx2VChmAXAcNkTmoIXKACvqoIbbHCeB.): failed to open stream: Permission denied

But Code working fine when uploading Image files only