I think you need to turn the gamerules "sendcommandfeedback" and "commandblockoutput" to false in order for it to not spam the chat. If the problem persists it is probably a bug in the server software.
Jake Herstad
I think you need to turn the gamerules "sendcommandfeedback" and "commandblockoutput" to false in order for it to not spam the chat. If the problem persists it is probably a bug in the server software.