Error in executing sample code of optmotiongen after upgrading ubuntu to 20.04 (ros noetic)

[W567]

@k-okada

I've tried with the sample code as in the README of optmotiongen.

roscd eus_qp/optmotiongen/euslisp/sample
roseus sample-inverse-kinematics.l
(sample-arm-reach-ik-raw)

Same error comes as:

With ubuntu version: 20.04
eus_qp is installed by: sudo apt-get install ros-noetic-eus-qp

Any advice would be appreciated.

[W567]

A new found is that building from source won't cause error in executing the sample codes, but still, error exists if eus_qp is installed via apt.