I have this error with the code:Invalid function name '' WHY??????Help me!!!!

I want to customize a neural network that has two inputs with each 151 elements, two hidden layers with ,respectively, 151 and 5 neurons, weights between first hidden layer and second hidden layers are 1, weights between second hidden layer and output layer are learned,the output layer has 5 neurons.

Why don't I simulate this code? IN is a matrix 2x151 and T is a matrix 151x1

Data=load('data.txt');
T=load('data_target.txt');
IN=Data';
OUT=T';

%%Definizione indici per il test set
testInd = [1:2,125:150];
outInd  = [1:2,125:150];
[testIn] = divideind(IN,testInd);
[testOut] = divideind(OUT,outInd);
[INn,ps]=mapminmax(IN);                     %normalizza i valori di ogni RIGA tra -1 
[testInn,ps1]=mapminmax(testIn);               

[INp,ps]=mapstd(INn);                         %trasforma la media e la deviazione std di ogni RIGA a 0 e 1 
[testInp,ps2]=mapstd(testInn);
%Rete neurale
net=network(2,4);
net.numInputs = 2;
net.numLayers = 4; 
net.layers{2}.size = 151;
net.layers{2}.transferFcn = 'radbas';
net.layers{3}.size=5;
net.layers{3}.transferFcn = 'radbas';
net.layers{4}.size=5;
net.layers{3}.transferFcn = 'purelin';
net.layerWeights{2,1}.value=1;
net.layerWeights{3,2}.learnFcn='learnwk';
net.trainParam.epochs = 1;  
net.trainParam.show = 10;      
net.trainParam.lr = 0.03;       
net.trainParam.goal = 1e-5;
net.trainParam.max_fail = 1e+10;
net.divideFcn = 'divideind';
net.divideParam.trainInd = [1:2,35:121];
net.divideParam.valInd = [1:2,125:150];

net.initParam='initlay';
net.initFcn = 'initlay';                        % set network init function
net.trainFcn = 'trainlm';                        % set network training function
net.performFcn = 'mse';
view(net)
net = train(net,IN,OUT);
%%Simulazione Rete sul training set
r = sim(net,IN);

figure, plot(OUT,'*b');
hold on
plot(r,'or');
%%Simulazione Rete sul val
r2 = sim(net,testIn);

figure, plot(testOut,'*b');
hold on
plot(r2,'or');

[Walter Roberson]

Which line of code is the error occurring at?

[Sean de Wolski]

Paste the full text of the error message