使用中报错，请问是什么原因

[253701]

Error occurred when executing QWenVL_API_S_Zho:

argument of type 'NoneType' is not iterable

File "J:\ComfyUI_windows_portable\ComfyUI\execution.py", line 152, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "J:\ComfyUI_windows_portable\ComfyUI\execution.py", line 82, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "J:\ComfyUI_windows_portable\ComfyUI\execution.py", line 75, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "J:\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Qwen-VL-API\QwenVL_API_Node.py", line 114, in qwen_vl_generation
if 'output' in response_json and 'choices' in response_json['output']:

[ningcc2024]

同问：
Error occurred when executing QWenVL_API_S_Zho:

argument of type 'NoneType' is not iterable

File "E:\ComfyUI-aki\ComfyUI-aki-v1.1\execution.py", line 152, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
File "E:\ComfyUI-aki\ComfyUI-aki-v1.1\execution.py", line 82, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
File "E:\ComfyUI-aki\ComfyUI-aki-v1.1\execution.py", line 75, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
File "E:\ComfyUI-aki\ComfyUI-aki-v1.1\custom_nodes\ComfyUI-Qwen-VL-API\QwenVL_API_Node.py", line 114, in qwen_vl_generation
if 'output' in response_json and 'choices' in response_json['output']:

[lwo2002]

要充值API费用了