I am solving a nonlinear Model predictive control problem . I get the following error. Can anybody help me understand the error report?

Answer 1

[Sargondjani]

The error says that the derivative at the initial point (x0) is either NaN, infinity, or complex. So you should check whether that is supposed to be the case. If this is only a local problem, you could use a slightly different starting value for x0

[kushal s]

Thank you, I could debug the error based on your advice. But I have some more error, could you please look into it.

[Sargondjani]

Apperently you used a non-linear constraint, and also is either NaN, infinity or complex at the initial point.

[kushal s]

But i have not used any nonlinear constarints. I think it wants me to use Nonlinear constraint function at initial point. Can you sugest possible corrections?

[Sargondjani]

I need to see your code (minimal working example would be great), otherwise it's hard to help you

Maybe you specified a non linear constraint, without intending to do so?