an't write image data to path /storage/app/public/uploads/products/QK_SQL6OUPYS3_16 code example

Example: Can't write image data to path

Just change this:

$path = public_path('images/cars/'.$filename);

To this:

$path = 'images/cars/' . $filename;

Also, make sure that, the target path/location is writable, has write 
permission.