Mujoco 200 Dynamic Library Error If Configured with mushroom_rl

[plaban]

Describe the bug

While configuring dm_control with mushroom_rl, I am finding difficulty in configuring mujoco200. Following is the error:

AttributeError: /.mujoco/mujoco200/bin/libmujoco200.so: undefined symbol: mjr_label

Following are the environment variables set:

export MUJOCO_GL=osmesa
export MJLIB_PATH="/.mujoco/mujoco200/bin/libmujoco200.so"
export MJKEY_PATH="/.mujoco/mujoco200/mjkey.txt"
export MUJOCO_PY_MJPRO_PATH="/.mujoco/mujoco200/"
export MUJOCO_PY_MJKEY_PATH="/.mujoco/mujoco200/mjkey.txt"
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/.mujoco/mujoco200/bin"

I am stuck for a long at this point. Kindly help

To Reproduce
import numpy as np
import torch
import torch.nn as nn
import torch.optim as optim
import torch.nn.functional as F

from mushroom_rl.algorithms.value import DQN

Expected behavior
No error

System information (please complete the following information):

• OS: [e.g. Ubuntu 20.04]
• Python version [Python3.7]
• Torch version [Pytorch 1.10]
• Mushroom version [1.70]

Additional Context
mujoco_py works perfectly fine as it can render environments from python code.

[boris-il-forte]

Have you tried the newest version of Mujoco?

you can download Mujoco 2.1.0 here:
https://mujoco.org/download

This version doesn't require a key and is easier to install. It should work almost out of the box.