2.17. DisplayErrors *global*
While all errors are reported in the error log file, errors can also be displayed by the browser. This is convenient while testing a configuration. Unless this is set, the DisplayErrors setting in the user catalogs will have no effect. Default is No.
DisplayErrors Yes
Note: This changes the value of $SIG{__DIE__} and may have other effects on program operation. This should NEVER be used for normal operation.