If KRNL-Injector failed to find the Roblox process, delete KRNL App data and see. If that doesn't help follow the solutions mentioned in this post to resolve the issue.

Here is how you can use Roblox Anime Last Stand scripts to unlock Macro farm and auto features in the game: Download Roblox Executor. (Arceus X or others)Some other executors include: krnl, Fluxus ...

Delta Executor is a script executor that lets you modify Roblox. Most antivirus flag the Delta Executor file as a virus. Read this post for details.