Drawing errors in Naruto Shippuden Anime (Netflix)?

I noticed that in season 8, episode 23, a ninja has a green chunin vest with the Uzushiogakure sign but has a headband with a?

[:? :] @

You're in the wrong movie genre if you don't like that.

Anime defies plot and film mistakes.

And now?

What is your question now

We're proud of you that you noticed that

This is the crossover episode with the 3 question mark kids

My question is whether this is not a mistake after all or whether someone has already noticed

That's the right * series genre for me. Anime is great

Sakastic?

Yes then look that if you think, I'm not responsible for you.