# Why do I get a contention error for a simple combination circuit in CircuitVerse?

I created a simple circuit on CircuitVerse:

When I change the C input from 0 to 1, I get a Contention Error.

What does the error mean, and what is wrong with my circuit?

How can I fix it?

• This question is best served in circuit verse fourms, also you have connected to terminals together with a wire Jul 3 '20 at 6:26
• @VoltageSpike I didn't see a CircuitVerse forum, but I see now that there is a Discord. Thanks for helping me even though I posted in the wrong place. Jul 3 '20 at 19:08