Demo 1.5 cannot be run on real robot

[haniehes]

I tried to run Demo.1 on my UR5 through Ros kinetic. The simulation of Pick and Place movement is done completely. But when I tried to run the simulated perception on the real robot I have this two errors:

1. the first one is after starting Movegroup:
   ERROR: cannot launch node of type [warehouse_ros/mongo_wrapper_ros.py]: can't locate node [mongo_wrapper_ros.py] in package [warehouse_ros]

2. The last one is after planning. Sometimes I don't see this error and robot moves part of path and suddenly stops and I see this Error again.
   [ WARN] [1526979985.550534141]: Failed to validate trajectory: couldn't receive full current joint state within 1s
[ INFO] [1526979985.552647147]: ABORTED: Solution found but controller failed during execution
[ERROR] [1526979985.553091696]: Move wait Failed
REQUIRED process [pick_and_place_node-1] has died!
process has died [pid 22464, exit code 1, cmd /home/hanieh/perception_driven_ws/devel/lib/collision_avoidance_pick_and_place/pick_and_place_node __name:=pick_and_place_node __log:=/home/hanieh/.ros/log/c3f2da22-5d9b-11e8-a983-3052cbd8f632/pick_and_place_node-1.log]. log file: /home/hanieh/.ros/log/c3f2da22-5d9b-11e8-a983-3052cbd8f632/pick_and_place_node-1*.log Initiating shutdown!

I found similar question #162 was asked 6 month ago, but it still is open and nobody paid attention to this.
So, I would appreciate if you could help us in this regard.

[haniehes]

I changed the connection from wifi to Ethernet and this error fixed!