Unit 3 : Rviz issue

Hello,

After launching start_mapping.launch and running Rviz, I have the following warning:
[ WARN] [1613741253.248615955, 2678.391000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.rviz.message_notifier] rosconsole logger to DEBUG for more information.

And in the Rviz window, there are “Global Status: Error” with Fixed Frame and “Status: Errors” in RobotModel and Map and in LaserScan whenever the topic /hokuyo_base/scan is selected.

Have a nice day.

Hello @yasmina.becis1 ,

What is the fixed frame you are using in RViz?