Solved Why Do I Get a Router/Access Point Conflict Channel Message

when i do a network connection check for my Epson printers i get a message that the network is working properly then it states a router/access point channel conflict detected I have 2 Epson printers a xp4100 and a xp400 plus a lexmark 901 pro they are all close to each other none will print now I have tried all the trouble shooters
I think mabe it is because they are to close together I just added the xp4100 and moved them all around any ideas