ImportError: cannot import name 'ERL_PARAMS' from 'finrl.config'

**To Reproduce**
Steps to reproduce the behavior:
1. Go to 'FinRL-master/finrl'
2. Run command 'python train.py'
3. See error

**Expected behavior**
Run succeed

**Screenshots**
(env10) root@ubuntu:/opt/AI/FinRL-master/finrl# python train.py
Traceback (most recent call last):
File "/opt/AI/FinRL-master/finrl/train.py", line 3, in
from finrl.config import ERL_PARAMS
ImportError: cannot import name 'ERL_PARAMS' from 'finrl.config' (/root/.pyenv/versions/env10/lib/python3.10/site-packages/finrl/config/__init__.py)

**Desktop :**
- OS: Ubuntu
- Version [18.04.6]

**Additional context**
Python: 3.10.2
finrl: 3.0.4 （pip can not find finrl 3.0.6)