In Xanathar's Guide to Everything (p. 151), the spell Chaos Bolt includes the following:
If you roll the same number on both d8s, the chaotic energy leaps from the target to a different creature of your choice within 30 feet of it. Make a new attack roll against the new target, and make a new damage roll, which could cause the chaotic energy to leap again.
Let's say I cast Chaos Bolt, it hits, and I roll two of the same number on my d8s. However, the party is fighting a lone enemy, so there are no other creatures I want to target.
Can I "choose" to target no-one, since the spell description says "of your choice", or does it happen regardless, and I just have to choose which party member takes the hit?
In summary, can I choose not to make this extra attack?