Bayesian estimation problem in labor search model

Hi, I’m now working on estimation with Labor Search DSGE model( atattched file).
But several estimation probles are annoying me, such that ‘exponent smaller than 1’ or ‘not positive definite’.
To avoid these problmes and get posterior mode, what should I modify this model?

I attatched the mod file which I made.

I personally think this probles are caused by too much equations which dynare cannot estimate these parameters well.

(datafile is .csv but the error code’The extension csv is not allowed ’ is shown,so I cannot attatched it.’)
f_gst.m (2.43 KB)
gst_int_log_est.mod (20.6 KB)

Please upload all required file in one zip-file. Also, please try the unstable version with