I am doing parameterization by minimizing a nonlinear target function. However, after the iteration runs, it returns the following message. And returns with the initial values for the parameters that I set.
*Iteration Func-count f(x) Step-size optimality
0 9 1.46536 7.77e+06
1 144 1.39431 1.57417e-14 5.47e+06
Local minimum possible.
fminunc stopped because the size of the current step is less than the default value of the step size tolerance.*
There is no error in the code. What do you suggest to solve this issue?