I have copied the Note for the Model
Notes for Model (Default model)
Computation of degrees of freedom (Default model)
Number of distinct sample moments: 171
Number of distinct parameters to be estimated: 70
Degrees of freedom (171 - 70): 101
Result (Default model)
Minimization was unsuccessful
The results that follow are therefore incorrect.
Chi-square = 135.120
Degrees of freedom = 101
Probability level = .013
Yesterday running the same model with the same data file, this error message did not occur and minimisation was reached with sensible results. Today I ran it again to check and found the above issue. I guess this is suppose to be my troubleshooting learning during my PHD.