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2019-03-01 16:34:28 -0500 marked best answer URDF parsing error: 'Error reading Attributes. at line 72 in /../urdf_parser/src/model.cpp ERROR: Model Parsing the xml failed'

URDF:

<?xml version = "1.0"?> 
<robot name = "two_wheeled_robot"> 
    <link name = "chassis">         
                <visual>        
                 <origin rpy = "0 0 0" xyz = "0 0 0.05"/>       
                <geometry>          
                <box size = "0.05 0.1 0.03"/>       
                </geometry>         
                </visual>   
        </link>       

         <link name = "right_wheel">        
               <visual>         
             <origin rpy = "0 0 0" xyz = "0.025 0 0.05"/>       
              <geometry> 
            <cylinder radius = "0.05" length = "0.01"/> 
        </geometry>         
               </visual>
    </link>
          <link name = "left_wheel">
                 <visual>
                 <origin rpy = "0 0 0" xyz = "-0.025 0 0.05"/>
                 <geometry>
                         <cylinder radius = "0.05" length = "0.01"/>
                 </geometry>
                 </visual>
         </link>    
         <joint name = "c_to_rw" type = "revolute">
        <parent link = "chassis"/>
        <child link = "right_wheel"/>
        <origin rpy = "0 0 0" xyz = "0.025 0 0.05"/>
        <limit upper = "2" lower = "-2" effort = "0.1" velocity = "0.5"/>
        <axis = "1 0 0"/>
           </joint>     
           <joint name = "c_to_lw" type = "revolute">
                 <parent link = "chassis"/>
                 <child link = "left_wheel"/>
                 <origin rpy = "0 0 0" xyz = "-0.025 0 0.05"/>
                 <limit upper = "2" lower = "-2" effort = "0.1" velocity = "0.5"/>
                 <axis = "-1 0 0"/>
         </joint>
 </robot>
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2018-08-26 05:29:14 -0500 asked a question Robot sdf model is not showing in Gazebo GUI. I have checked with gzsdf and the model passed the check.

Robot sdf model is not showing in Gazebo GUI. I have checked with gzsdf and the model passed the check. The robot model

2018-08-15 10:26:31 -0500 commented answer URDF parsing error: 'Error reading Attributes. at line 72 in /../urdf_parser/src/model.cpp ERROR: Model Parsing the xml failed'

thank you gvdhoorn. I take note of the advice about the spaces.

2018-08-15 03:21:01 -0500 asked a question I m getting this error when I m trying to view a urdf file 'Error: Error reading Attributes. at line 72 in /build/buildd/urdfdom-0.2.10+dfsg/urdf_parser/src/model.cpp ERROR: Model Parsing the xml failed'. Please find the code below.

I m getting this error when I m trying to view a urdf file 'Error: Error reading Attributes. at line 72 in /b

2018-08-15 03:21:00 -0500 asked a question URDF parsing error: 'Error reading Attributes. at line 72 in /../urdf_parser/src/model.cpp ERROR: Model Parsing the xml failed'

I m getting this error when I try to visualize the following urdf.file 'Error reading Attributes. at line 72 i