041486e1861818a11fb2dc5452d19d7e *kvhw1998-12-31d3t02.wav a4c6d4e4dd450e3e09f5d54d452af39e *kvhw1998-12-31d3t03.wav dae749c0e19b6551790c267660f1d83f *kvhw1998-12-31d3t04.wav 6386fb46a34e5b7edfcaa0f6487aff0e *kvhw1998-12-31d3t01.wav App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned