Hello yonathan289,
Welcome to Apple Support Communities!
I understand from your question that your watch is not charging and there is a red logo on the screen. I can certainly help you with this!
These articles will be a good resource for you. It will walk you through the necessary steps to resolve the question.
If your Apple Watch won't charge or it won't turn on
If you see a red "!" on your Apple Watch
I hope this is able to resolve your issue. If you have any more questions or this does not resolve your issue, please reach back out on the thread!
Cheers.