'nmse is nan. exiting...'

[unnikrishnan009]

Hi,
I tried to train LAMP network using
"python3 main.py --task_type sc -g 0 [-t] \ --test --M 30 --N 50 --pnz 0.25 --SNR inf --con_num 0 --column_normalized True \ --net LAMP -T 10 -p 1.2 -maxp 13
--scope LAMP --exp_id 0".
I m getting 'nmse is nan. exiting...' error in layer 4. Thus it is not training after that.
Am I missing any other parameter that needs to be fed as input for M = 30,N=50 setup.
In default setup (M=250,N=500 and pnz = 0.1) it is working without errors.