Hi,all

I was trying to compile my model but an error occurs without any information or log.

I can’t even see what wents wrong.

```
mod <- cmdstan_model("binomial.stan")
Compiling Stan program...
Error: An error occured during compilation! See the message above for more information.
```

I tried an example:

```
> file <- file.path(cmdstan_path(), "examples", "bernoulli", "bernoulli.stan")
> mod <- cmdstan_model(file)
Model executable is up to date!
> class(mod)
[1] "CmdStanModel" "R6"
```

which seems working.

But another example:

```
stan_program <- write_stan_file("
parameters {
real x;
}
model {
real mu = -2;
x ~ normal(fabs(mu), 1);
}
"
)
> mod <- cmdstan_model(stan_program)
Compiling Stan program...
Error: An error occured during compilation! See the message above for more information.
```

Again, there’s just a notice of error but nothing detailed about it.

Any ideas how can I solve this problem?