Cant use installer

[replays36DXD]

Whenever I try using the Impact installer to inject the client to Minecraft 1.16.5 it says "vanilla Minecraft not detected" and asks whether I have launched it before. I use Tlauncher and can't figure out what I'm doing wrong, I launched the 1.16.5 release and waited for a few seconds before pressing save and quit game, but even after it still would say the same error message.

[jushiima]

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