je ne peux pas me connecter a mon real car quand je clique sur jouer sa me met les blocs entre le client et le serveur ne correspondent pas. Cherchez <Boat> pour en savoir plus

Thank you for your report!
We're tracking this issue in REALMS-13533, so this ticket is being resolved and linked as a duplicate.

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I have found the problem

a mod his broken, he don’t work on realm but I don’t now why. The name of the mod is Redstone Add-On 1.2 de Pixelbiester