got the error message in second run

[joshua76y]

Error occurred when executing CaptureWebcam:

object of type 'NoneType' has no len()

File "F:\AI\ComfyUI_windows_portable\ComfyUI\execution.py", line 153, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "F:\AI\ComfyUI_windows_portable\ComfyUI\execution.py", line 97, in get_output_data
output_is_list = [False] * len(results[0])

the first run is on and the sampler can get the webcam data, but when I click the Queue Prompt again and it doesn't work

[toyxyz]

This error can occur if there is no webcam connected to your computer. Do you have any other video devices connected besides your webcam?

[joshua76y]

I happend when I choose Captures an image directly from the webcam node

[toyxyz]

This error occurs when the webcam is turned off. Make sure your webcam is turned on.