We can't do this by default because it will lead to information disclosure security vulnerabilities.  We can give guidance to users on how to set the error reporting - but we must avoid showing any errors in the output by default.

FYI, as a side note - make sure you have a local.php with:

```
error_reporting(-1);
ini_set("display_errors", true);
```

in it so that during dev time you're seeing everything.