Embedding training stop working

[antematrix]

Traceback (most recent call last):
File "/content/stable-diffusion-webui/modules/call_queue.py", line 56, in f
res = list(func(*args, **kwargs))
File "/content/stable-diffusion-webui/modules/call_queue.py", line 37, in f
res = func(*args, **kwargs)
File "/content/stable-diffusion-webui/modules/textual_inversion/ui.py", line 33, in train_embedding
embedding, filename = modules.textual_inversion.textual_inversion.train_embedding(*args)
File "/content/stable-diffusion-webui/modules/textual_inversion/textual_inversion.py", line 413, in train_embedding
ds = modules.textual_inversion.dataset.PersonalizedBase(data_root=data_root, width=training_width, height=training_height, repeats=shared.opts.training_image_repeats_per_epoch, placeholder_token=embedding_name, model=shared.sd_model, cond_model=shared.sd_model.cond_stage_model, device=devices.device, template_file=template_file, batch_size=batch_size, gradient_step=gradient_step, shuffle_tags=shuffle_tags, tag_drop_out=tag_drop_out, latent_sampling_method=latent_sampling_method, varsize=varsize, use_weight=use_weight)
File "/content/stable-diffusion-webui/modules/textual_inversion/dataset.py", line 128, in init
entry.cond_text = self.create_text(filename_text)
File "/content/stable-diffusion-webui/modules/textual_inversion/dataset.py", line 154, in create_text
text = random.choice(self.lines)
File "/opt/conda/lib/python3.10/random.py", line 378, in choice
return seq[self._randbelow(len(seq))]
IndexError: list index out of range

it was fine but stop working today.