When I used xdg-launcher to start my html5 application, I found below error:

Aug 19 02:47:54 m3ulcb afbd-warehouse@1.0[3823]: DEBUG: RunXDG created.
Aug 19 02:47:54 m3ulcb afbd-warehouse@1.0[3823]: DEBUG: SIGTERM being defaulted.
Aug 19 02:47:54 m3ulcb afbd-warehouse@1.0[3823]: DEBUG: waiting for notification: surafce created
Aug 19 02:47:54 m3ulcb afbd-warehouse@1.0[3823]: DEBUG: find surfpid by rid(3829)
Aug 19 02:47:54 m3ulcb afbd-warehouse@1.0[3823]: ERROR: fail to execve(/usr/bin/chromium)

I guess that this issue caused by permission deny(maybe application user was changed to agldriver), so how can I use runxdg to start html5 application? Adding some permissions in config.xml?

Otherwise, I have 2 questions as below:
1. Runxdg was deprecated? In future how to implement html5 appllication in AGL?
2. Are there any documents about agl user(agldriver/aglpassenger) design?