DBUS Can't be accessed Issue

Hi AGL All members/
 
I have a question about application framework.
 
It is not regular situation.
When I Install application & reboot, sometimes error is occured like below.
 
 
"Failed to open connection to "session" message bus: Failed to connect to socket /run/user/0/bus: Connection refused"
 
 
After got upper log, I Can't do anything even afm-util list  command.
 
Is there any solution to solve this problem.