Hi @Vaishnavi_Chandilkar, our current version of PennyLane (v0.28) only supports Python 3.8 and above. The last PennyLane version which supported Python 3.6 was v0.15.1. This is very old so if possible I would suggest upgrading to the latest Python versions.
Also, your issue seems to be related to Torch. The latest version supported is v1.13.
I hope this is helpful for you!