# Revision history [back]

### Something wrong with the "Make a map" tutorial ??

When I follow the tutorials at "Make A Map", I execute the command "roslaunch turtlebot_gazebo turtlebot_playground.launch" in a terminal, but serveral errors are resonsed and the turtlebot environment does not appear as expected as the picture show. What happend? How can i fix it? or just this tutorial needs to be updated.

### Something wrong with the "Make a map" tutorial ??

When I follow the tutorials at "Make A Map", I execute the command "roslaunch turtlebot_gazebo turtlebot_playground.launch" in a terminal, but serveral errors are resonsed and the turtlebot environment does not appear as expected as the picture show. What happend? How can i fix it? or just this tutorial needs to be updated.

The Error is as follows: $source /opt/ros/hydro/setup.bash$ export TURTLEBOT_BASE=create $export TURTLEBOT_STACKS=circles$ export TURTLEBOT_3D_SENSOR=asus_xtion_pro $roslaunch turtlebot_gazebo turtlebot_playground.launch Response: ...... Error [ModelDatabase.cc:408] Unable to download model[model://dumpster/meshes/dumpster.dae] Error [SystemPaths.cc:371] File or path does not exist[""] .... .... .... ....（Many Warnings and Errors）  4 retagged tfoote 53000 ●101 ●367 ●458 http://www.ros.org/ ### Something wrong with the "Make a map" tutorial ?? When I follow the tutorials at "Make A Map", I execute the command "roslaunch turtlebot_gazebo turtlebot_playground.launch" in a terminal, but serveral errors are resonsed and the turtlebot environment does not appear as expected as the picture show. What happend? How can i fix it? or just this tutorial needs to be updated. I am working with ROS-Hydro and the Ubuntu 12.04. The following are executed in a terminal:$ source /opt/ros/hydro/setup.bash \n $export TURTLEBOT_BASE=create \n$ export TURTLEBOT_STACKS=circles \n $export TURTLEBOT_3D_SENSOR=asus_xtion_pro \n$ roslaunch turtlebot_gazebo turtlebot_playground.launch \n

The Error is as follows: ...... Error [ModelDatabase.cc:408] Unable to download model[model://dumpster/meshes/dumpster.dae] Error [SystemPaths.cc:371] File or path does not exist[""] .... .... .... ....（Many Warnings and Errors）