robotiq gripper spawns and the fingers flop

[garethByers]

after spawning into the simulation the gripper spasms and does not work at all. this happens before and after being attached to a ur5 robot

[MZJR]

You may need this plugin？https://github.com/roboticsgroup/roboticsgroup_upatras_gazebo_plugins.git

[iamjoong9]

You may need this plugin？https://github.com/roboticsgroup/roboticsgroup_upatras_gazebo_plugins.git

Solved this issue by sudo apt install ros-noetic-roboticsgroup-upatras-gazebo-plugins
20.04, Noetic.

Thanks