MULE 01.flac:97e8ff0af6b409b46b829877c0cfd198 MULE 02.flac:009a68f4a5983abe3dc293099c093100 MULE 03.flac:2f052bf20ce0db744b877d69f664324d MULE 04.flac:8e651fc6d349d3e22515583a837a9b47 MULE 05.flac:c563c36c9983191a97e273d45c3b2197 MULE 06.flac:148bcb11139ff10ce50579096e286b5e MULE 07.flac:79a228cca22e865ecf0fb01e607a45d3 MULE 08.flac:fc818847358e691cc70e11ac50f35c9f MULE 09.flac:aa5e1d9575325effb2d77548161f1091 App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned