No module named 'rlbench.action_modes'; 'rlbench' is not a package

[rongkunxue]

When I followed the tutorial and ran the example, I encountered this issue: Traceback (most recent call last): File "/root/exp/rlbench.py", line 2, in from rlbench.action_modes.action_mode import MoveArmThenGripper File "/root/exp/rlbench.py", line 2, in from rlbench.action_modes.action_mode import MoveArmThenGripper ModuleNotFoundError: No module named 'rlbench.action_modes'; 'rlbench' is not a package What should I do?