I followed these steps for both Dreambooth-SD-Optimized and for the XavierXiao version. Followed the guide for both, created separate installs for them. Same error both times, just when it's about to start training.

>Traceback (most recent call last):
> File "main.py", line 787, in <module>
> ngpu = len(lightning_config.trainer.gpus.strip(",").split(','))
>AttributeError: 'int' object has no attribute 'strip'

Not sure what to do! Any suggestions would be appreciated.