[BUG] PDPEnv is not importable

[Junyoung Park]

Describe the bug

PDPEnv is not importable.

Python 3.9.16 (main, Mar  8 2023, 14:00:05)
[GCC 11.2.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from rl4co.envs import PDPEnv
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/silab9/proj/rl4co/rl4co/envs/__init__.py", line 1, in <module>
    from rl4co.envs.base import RL4COEnvBase
  File "/home/silab9/proj/rl4co/rl4co/envs/base.py", line 9, in <module>
    from rl4co.data.dataset import TensorDictDataset
ModuleNotFoundError: No module named 'rl4co.data'
>>>

To Reproduce

Steps to reproduce the behavior.

Please try to provide a minimal example to reproduce the bug. Error messages and stack traces are also helpful.

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pip install -e .

from rl4co.envs import PDPEnv

Expected behavior

The PDPEnv is being importable.

Reason and Possible fixes

If you know or suspect the reason for this bug, paste the code lines and suggest modifications.

Checklist

• I have checked that there is no similar issue in the repo (required)
• I have provided a minimal working example to reproduce the bug (required)

[Federico Berto]

It works on my end, have you checked the error message? Is there any reason why it is not importable?