请教各位老师同学，我在用Mplus做验证性因子分析时候，程序跑出下面的问题，没有CFI和TtI，请问怎么解决？ Parameter 144怎么找？谢谢！

THE MODEL ESTIMATION TERMINATED NORMALLY

     THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES MAY NOT BE
     TRUSTWORTHY FOR SOME PARAMETERS DUE TO A NON-POSITIVE DEFINITE
     FIRST-ORDER DERIVATIVE PRODUCT MATRIX.  THIS MAY BE DUE TO THE STARTING
     VALUES BUT MAY ALSO BE AN INDICATION OF MODEL NONIDENTIFICATION.  THE
     CONDITION NUMBER IS      -0.106D-18.  PROBLEM INVOLVING THE FOLLOWING PARAMETER:
     Parameter 144, F3

附具体语句：
            SI BY v1 - v4;
            II BY v5 - v9;
            CI BY v10 - v13;
            F1 BY SI II CI;
            F2 BY v14 - v17;
            FP BY v18 - v25;
            OP BY v26 - v31;  
            F3 BY FP OP;
            SA BY v32 - v36;
            SR BY v37 - v41;
            SQ BY v42 - v46;
           F4 BY SA SR SQ;