trainer.tuner.lr_find() not work

[knightdby]

when i running under code with pytorch-lightning 1.7.6, have this error:

trainer = Trainer.from_argparse_args(args)
lr_finder = trainer.tuner.lr_find(model, data_model)
model.hparams.lr = lr_finder.suggestion()
print('lr_finder.suggestion: ', lr_finder.suggestion())

then running this code, are not error:

trainer = Trainer(auto_lr_find=args.auto_lr_find, gpus=args.gpus)
lr_finder = trainer.tuner.lr_find(model, data_model)
model.hparams.lr = lr_finder.suggestion()
print('lr_finder.suggestion: ', lr_finder.suggestion())

I think class Trainer are not normal inited by function __init__(), then I check function from_argparse_args(), theoretically, it can be initialized normally by class Trainer, and return class Trainer.