How to QLoRA training with ZeRO-3 on two or more GPUs?

I added a 4-bit load after the command LoRA training with ZeRO-3 on two or more GPUs to achieve a mix of QLoRA and ZeRO-3. But the program encountered the following error:
RuntimeError: expected there to be only one unique element in .all_gather_coalesced.. at 0x7f2ec8daf900>
The command is:
ACCELERATE_LOG_LEVEL=info accelerate launch --config_file recipes/accelerate_configs/deepspeed_zero3.yaml --num_processes=2 scripts/run_sft.py recipes/zephyr-7b-beta/sft/config_lora.yaml --load_in_4bit=true