Anyone to help build carla with chrono, especially 'Tracked vehicle (M113)'?

[KimBooKun]

I followed the chrono integration process at carla docs. It was checked that chrono physics is executed for the sedan's json file shown in the doc's example. But the appearance of the vehicle has not changed. Can't I change the appearance of the vehicle if I use chrono (json)?

Also, ultimately what I want is to implement and run the tracked vehicle within the carla simulator. When I linked carla and chrono, I found the json file of the US military armored vehicle M113 in the json file provided as a default. However, when I press ctrl+o in manual_control_chrono.py, the following error occurs and carla simulator is aborted.

ERROR: Could not open JSON file: "M113/vehicle/M113_Vehicle_SinglePin.json"

There is no problem with base_path because base_path was run in sedan's case.
I can't find any examples of creating tracked vehicles using carla and chrono (json).

For summarize questions,

1. How can I change the vehicle's appreance by using json file?
2. When I run 'manual_control_chrono.py', I cannot apply M113's json file to carla (Tracked Vehicle)

Can anyone help me? :)