RLException Error in TurtleBot3 [closed]
I am using ROS Noetic in Ubuntu 20.04. I followed each and every step given in robotis e-manual. However, when I run the following command
roslaunch turtlebot3_bringup turtlebot3_robot.launch
I receive the following message:
RLException: ERROR: unable to contact ROS master at [http://192.168.0.123:11311] The traceback for the exception was written to the log file
I have checked the connections, the IP addresses, the bashrc
files of both the robot and the remote PC. I have redone the entire setup process for at least 6 times as of now but no solution has been found.
Kindly help me.