Stuck in while loop, seems the fingerServer can not initialize correctly

[Hubert51]

When I run pick_place.cpp in kinova_moevit/kinova_moveit_arm_demo. The program will stuck in this line

while(robot_connected_ && !finger_client_->waitForServer(ros::Duration(5.0))){
      ROS_INFO("Waiting for the finger action server to come up");
}

This bug happens in second run. When I first test the code, everything works correctly. Maybe we need to restart the computer to reset some parameters