"Made for an older version" (Minecraft 1.16.5)

[BackThePortal]

I put the "Scanner Datapack" into the "datapacks" folder and Minecraft won't run /function scripts:find.
Then I saw that the datapack was "made for an old version of Minecraft"...

I tried to run the Datapack in version 1.15 but the game didn't even recognize it, the resource packs list was empty.
I think you should update the datapack so it's compatible with the newest version. Can you please solve this? :(