Are you running into a (like "Cloud data" errors or "Sigpatch" issues) while trying to install or play the game?
To use this file on a modded Nintendo Switch running Custom Firmware (CFW) like Atmosphere, you generally need to follow these steps: 1. Extract the .rar File Chasing Light [01002DF015A30000][v0][US].nsp.rar
On your PC, open the "Switch" drive that appears, navigate to (or "NAND Install"), and simply drag and drop your .nsp file there. Are you running into a (like "Cloud data"