roslaunch turtlebot_bringup minimal.launch name conflict

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Hi all, I have issues with launching this command on multiple turtlebots 2 and I have tried almost everything. I have tried single Ros Master and it would not work when this command is run on two turtlebots 2. I have tried multimaster_kie and I still have this issue. Or is there a way to bringup multiple turtlebots 2 without running this command? If anyone has implemented multi-turtlebots please help.

Thanks