If you include the xqrs-error.xsl file in your Modules directory at a path of 'optional-library/xqrs-error.xsl' relative to xqrs.xqy, then XQRS will make use of this to show you errors, stack traces and code snippets in greater detail which may help you in debugging your code and during development.

The following is a screen shot of the kind of view it gives for errors when they occur.