NSP files are often created by dumping legitimate cartridges or eShop downloads using homebrew tools like nxdumptool or Lockpick. If the dumping process is interrupted or misconfigured, the dumper might create an NSP header and include metadata (Control NCA) but fail to extract and package the actual Program NCA.
Re-dump your game or use a tool like SAK (Switch Army Knife) to verify or convert the file to XCI. the nsp file is missing a programtype nca hot