Unable to run excerise 1.2

Hi,
Im getting this error when, I tried to roslaunch the urdf file

Hi @johnrebeiro ,

Could you share the content of the launch file?
It seems to be an error (maybe a typo) in the param tag

Regards

I tried with exercise 1.3 also but getting the same error.

Hi @johnrebeiro ,

I noticed it tries to load a file named: mira_geometric.urdf, but this file does not exist in your workspace.
Could you check if you should have the file or maybe just change the argument to a existing one?

Regards