No transform from [robot0/robot0/map] to [world]

Hey everyone I was trying to add a fixed "World" frame to add my separate TF trees (robot/map -> robot/odom -> robot/base_link) using a static transform publisher, when I came across this problem; When I try to visualize my map in rviz, I get the following error: No transform from [robot0/robot0/map] to [world]. (I get this error whether I add the fixed frame or not) All I do is bring up a map, separate sdf models and run gmapping for each one of them using this node in my launch file: How can I avoid the two prefixes without having to use map without the robot_name argument? (since I need separate map frames for my navigation package) I have uploaded the picture of my rviz and TF tree [here](https://ufile.io/rmzc0). Thank you!