Error in Multicut module

IndexError: index 396 is out of bounds for axis 0 with size 396

Could anyone please tell me what does this mean? And, how can I correct it?
Thanks a lot!

Hi @Sunny_Yu,

multicut is a bit finicky. Could you confirm that you have changed the superpixels after labeling before this error occurred? If this is not the case, would you remember what sequence of actions led to this error? It always helps a lot if we can reproduce such errors on our sides…

I remember that I load the raw data and probability map, and run with default parameters sucessfully. The error occurs when I tried to reduce the value of threshold from 3.0 to 2.0.