Bug on Qwen2-VL

[yusalei]

When running the code below
python3 -m lmms_eval \ --model=qwen2_vl \ --model_args pretrained="Qwen/Qwen2-VL-2B-Instruct",device_map=cuda \ --tasks=mmstar,chartqa \ --batch_size=1 \ --log_samples \ --log_samples_suffix=qwen2_vl \ --output_path="./logs/"

I have encoutered the bug like

TypeError: Can't instantiate abstract class Qwen2_VL without an implementation for abstract method 'generate_until_multi_round'

[orrzohar]

LongVA is also affected:

TypeError: Can't instantiate abstract class LongVA with abstract method generate_until_multi_round                                                                                                                                        

[abzb1]

cc. #281