Warning removeConstraint failed

[yunjho]

Hi, I'm currently using SAC algorithm with stablebaseline3.

• OS: Ubuntu 20.04.1 LTS
• Python: 3.7.11

When I set the n_envs = 5, I encounter the warning message during the training: b3Warning[examples/SharedMemory/PhysicsDirect.cpp,1049]:
removeConstraint failed

Does the current simulator support multiprocessing, or could this warning be related to a different issue?

If you need more information, please let me know.

Thank you for your help!