No root joint specified. Assuming fixed joint, moveit

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Hi, I am importing a 6 DOF arm using setupAssistant. When I load the urdf for the robotic arm, all the parts of the robotic arm are at the same plane. It shows a message "No root joint specified. Assuming fixed joint".

I searched in other threads and came across that there is some information to be added in the SRDF file. Since I have generated the URDF from Solidworks, so please tell where should I create a SRDF for the same and whether we have to load the URDF or the SRDF of the robot to fix this.

Here are the console logs:

[ INFO] [1400146129.617803918]: Loaded robot robot model.
[ INFO] [1400146129.618207340]: Setting Param Server with Robot Description
[ INFO] [1400146129.632349428]: Robot semantic model successfully loaded.
[ INFO] [1400146129.632505515]: Setting Param Server with Robot Semantic Description
[ INFO] [1400146129.664284638]: Loading robot model 'robot'...
[ INFO] [1400146129.664376122]: No root joint specified. Assuming fixed joint
[ INFO] [1400146130.118231108]: Stereo is NOT SUPPORTED
[ INFO] [1400146130.118454828]: OpenGl version: 3 (GLSL 1.3).
[ INFO] [1400146130.830133313]: Loading robot model 'robot'...
[ INFO] [1400146130.830429200]: No root joint specified. Assuming fixed joint
[ INFO] [1400146131.398639691]: Loading robot model 'robot'...
[ INFO] [1400146131.398745909]: No root joint specified. Assuming fixed joint
[ INFO] [1400146131.688112326]: Loading Setup Assistant Complete