Map Creation_help

Hi, I was trying to visualize my transform but something’s wrong when I use
rosrun tf2_tools to generate the pdf


ERROR: TF_OLD_DATA ignoring data from the past (Possible reasons are listed at tf/Errors explained - ROS Wiki) for frame base_link at time 0.050000 according to authority /robot_state_publisher
at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp

Can someone explain what happened?