Q re Gauss-Newton Method convergence in Nonlinear Regression

I am using a Minitab implementation of the Gauss-Newton Method to approximate a nonlinear regression of a model with 6 parameters (2 are covariates). After about 9 iterations of this algorithm, all the parameters converge to zero.

What is the significance of this? Do you have any suggestions as to what I should do from here?

Thanks, Alan :confused: