`werkzeug.contrib` module not found

While running `python main.py` it gives me following error.
```
Traceback (most recent call last):
File "main.py", line 5, in
from werkzeug.contrib.fixers import ProxyFix
ModuleNotFoundError: No module named 'werkzeug.contrib'
```

I tried to install the `werkzeug.contrib` library but it gievs me following output. command `pip install werkzeug.contrib`
```
ERROR: Could not find a version that satisfies the requirement werkzeug.contrib (from versions: none)
ERROR: No matching distribution found for werkzeug.contrib

```

command `pip install werkzeug` gives me this output
```
Requirement already satisfied: werkzeug in /home/hemang/anaconda3/lib/python3.8/site-packages (2.0.2)
```

Please help me resolve this issue.

I am using `python 3.8.8`