Cannot run "gym_mujoco_tutorial"

[hai-h-nguyen]

Problem

Exception when running gym_mujoco_tutorial:

Steps to reproduce

Steps to reproduce the behavior:

1. Run:
   PYTHONPATH=. python allenact/main.py gym_mujoco_tutorial -b projects/tutorials -m 8 -o experiment_output/mujoco -s 0 -e
2. See error

allenact/allenact/algorithms/onpolicy_sync/storage.py", line 187, in initialize
    for key in self.memory_specification:
TypeError: 'NoneType' object is not iterable

Desktop

Please add the following information:

• OS: Ubuntu 16.04.5
• AllenAct Version: master

[jordis-ai2]

@hai-h-nguyen Thanks for letting us know. I think the edge case of agents without memory is not correctly handled after the refactoring of the storage module. It should be an easy fix.