Please share your Stan program and accompanying data if possible.

When I run the following code

```
data {
int<lower=0> N;
real Y[N];
real X[N];
real M1[N];
real M2[N];
real<lower=0> sigma1[N];
real<lower=0> sigma2[N];
}
parameters {
real ie;
real de;
real alpha1;
real alpha2;
real beta1;
real beta2;
real c;
}
model {
for(i in 1:N){
real mu_M1[i]=alpha1*X[i];
M1[i] ~ bernoulli(mu_M1[i]);
real mu_M2[i]=alpha2*X[i];
M2[i] ~ normal(mu_M2[i],sigma1[i]);
real mu_Y=c*X+beta1*M1[i]+beta2*M2[i];
Y[i]~normal(mu_Y[i],sigma2[i]);
real ie1=alpha1*mu_M1[i]*(1-mu_M1[i])*beta1
real ie2=alpha2*beta2
}
alpha1~normal(0,1);
alpha2~normal(0,1)
mu_M2=alpha2*X;
sigma1~gamma(1,0.1);
c~normal(0,1);
beta1~normal(0,1);
beta2~normal(0,1);
sigma2~gamma(1,0.1);
}
```

I have the following errors:

```
SYNTAX ERROR, MESSAGE(S) FROM PARSER:
Variable definition base type mismatch, variable declared as base type real[ ] variable definition has base type realVariable definition dimensions mismatch, definition specifies 1, declaration specifies 0 error in 'model356c14886602_567' at line 25, column 29
-------------------------------------------------
23: model {
24: for(i in 1:N){
25: real mu_M1[i]=alpha1*X[i];
^
26: M1[i] ~ bernoulli(mu_M1[i]);
-------------------------------------------------
Error in stanc(file = file, model_code = model_code, model_name = model_name, :
failed to parse Stan model '567' due to the above error.
```