New execute crashes my game

Whenever I use commands like /execute on items it crashes the game.

For Example:

In a repeating always active command block /execute at @e[name=Snowball] run give @p[r=6] snowball

In a chain always active conditional command block connecting to the repeating one /execute at @e[name=Snowball] run kill @e[name=Snowball, r=6]