Give all players items on death, within a radius

Heyo!

So I have created some new mob for my servers Raid Game and they work beautifully.
The one thing I cannot get them to do is give all players items on death.

So, from my research, I have the following:
Nothing errors out for the mob itself, in the console, I can see the command runs, but it says <target.name> not found. I have also set the commands.yml file set to '*' Seen as so:...

Give all players items on death, within a radius