metavision_viewer unable to read camera_config.json correctly in KV260+imx636

metavision_viewer unable to read camera_config.json correctly in KV260+imx636

this is print out and the camera_config file. metavision_viewer (4.6.2) is able to work well with the camera_config.json but when it got upgraded to 5.0.0, it become like this. Is there a change to the format of the camera_config.json file? if so, could you share the new format to me. Thanks!