An error when I run the apps in rocon_remocon. #80

When I click the apps of UI, this error occurred. I found that this error is generated from the launch.java file, the source code is:
static private Result launchWebUrl(final Activity parent, final RoconDescription concert, final rocon_interaction_msgs.Interaction app) { try { ...... ...... catch (MalformedURLException e) { return Result.MALFORMED_URI.withMsg("App URL is not valid. " + e.getMessage()); }
I don't know where I use the com.github.rosjava.android_apps.teleio.indigo.MainActivity as a protocol, Can you help me? This problem make me trouble for a long time. Thank you!