Oh ye, I am using a proxy server, discord.osyr.is instead of the default discordapp.com (because that doesn’t work)
Oh okay osyr.is. One second. It is probably the problem.
This post says it shut down a long time ago. Is it possible for you following the tutorial and creating your own docker app? Or there may be some other ones out there.
Or apparently discord no longer blocks Roblox. Could you try discord directly?
By the way, the reason why you’re getting the error on the client is because RemoteFunctions propagate the error from the server to the client. This is one reason why you shouldn’t use RemoteFunctions. Otherwise always make the server callback use a pcall internally, so it wouldn’t spill the error back to the client.