Setting ephemeral has to happen in an initial reply (reply() or deferReply()) to set the mode for all replies in this 'thread'. Once the ephemeral state of a message has been set it can not be changed. If you want to send a visible message after an ephemeral message it has to be new message. See https://discordjs.guide/slash-commands/response-methods.html#ephemeral-responses
		
			
				
	
	
	
		
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			777 B