Move group node crashes while planning with approximate constraint manifold

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Platform:

Ubuntu 18.04.2 (Kernel: 5.4.0-66-generic) - Vmware

ROS Melodic

Moveit debian installation

Issue

I have created a constraint database with orientation constraints following the instructions from the moveit tutorial. Given below is the constraint msg whicnh i used to create the database.

name: orientation_constraints
constraints:
- type: orientation
  frame_id: base_link    
  link_name: ee_link    
  orientation: [-3.1415269, -1.57079632, 0] #RPY    
  tolerances: [6.28318531, 0.2, 6.28318531]
  weight: 1.0

Now when I try to plan and execute a path using the orientation constraint, move group node crashes. GIven below is the constraint which I am using while planning a path

   orientation_constraint = moveit_msgs.msg.OrientationConstraint()
    orientation_constraint.header.frame_id = self.move_group.get_planning_frame()
    orientation_constraint.link_name = self.move_group.get_end_effector_link()     
    orientation_constraint.orientation.x=-0.707044
    orientation_constraint.orientation.y=-0.000472224
    orientation_constraint.orientation.z= 0.707168
    orientation_constraint.orientation.w=0.000954376
    orientation_constraint.absolute_x_axis_tolerance = 0.01
    orientation_constraint.absolute_y_axis_tolerance = 0.01
    orientation_constraint.absolute_z_axis_tolerance = 0.01
    orientation_constraint.weight = 0.9

I am able to execute the path with the above constraint without using the database. But when I try to use the database, it crashes. I also tried changing the tolerances and weight values but nothing happened. Given below is the debug output of the move group node.

[ INFO] [1615938113.480885794]: manipulator: Using precomputed state sampler (approximated constraint space) for constraint 'orientation_constraints'
[ INFO] [1615938113.480915564]: RRTConnect: Starting planning with 1 states already in datastructure
[DEBUG] [1615938113.480939369]: RRTConnect: Waiting for goal region samples ...
[DEBUG] [1615938113.481038877]: Beginning sampling thread computation
[DEBUG] [1615938113.481206214]: getPositionIK
[DEBUG] [1615938113.486549535]: End effector index: 7
[DEBUG] [1615938113.487436069]: Solution passes callback
[DEBUG] [1615938113.487724595]: End effector index: 7
[DEBUG] [1615938113.487859751]: Adding goal state
[DEBUG] [1615938113.487958569]: getPositionIK
[DEBUG] [1615938113.491063008]: RRTConnect: Waited 0.010110 seconds for the first goal sample.
[move_group-4] process has died [pid 76735, exit code -11, cmd /opt/ros/melodic/lib/moveit_ros_move_group/move_group --debug __name:=move_group __log:=/home/gokul/.ros/log/f9b1ab98-86b0-11eb-84f3-000c299cc7bf/move_group-4.log].
log file: /home/gokul/.ros/log/f9b1ab98-86b0-11eb-84f3-000c299cc7bf/move_group-4*.log

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