SFTTrainer and wikitext dataset

Beginners
1

I downloaded the wikitext dataset:

from datasets import load_dataset

dataset = load_dataset("wikitext",'wikitext-103-raw-v1')

After downloading it I used SFTtrainer:

from trl import SFTTrainer

max_seq_length = 512

trainer = SFTTrainer(
    model=model,
    train_dataset=dataset["train"],
    peft_config=peft_config,
    dataset_text_field="text",
    max_seq_length=max_seq_length,
    tokenizer=tokenizer,
    args=training_arguments,
)

After using trainer.train() it gave the error "IndexError: Invalid key: 1593817 is out of bounds for size 0
"