Output of qpfunction is nan

[ProphecyQAQ]

Hello!
I'm trying to add qpth into my learing method. But in traing stage, after a few steps, the output of qpFuntcion is all nan.
But I tried to call qpth in another script and set the input paramater as same as nan's input, the output now is right.
So I want to konw why?
Thanks.

[Nathan-zh]

Same with you.