Improved debug info in error modal

app/partials/desktop/error_modal.html

@@ -52,7 +52,7 @@
     <div ng-if="error" class="error_modal_details" ng-switch="error.detailsShown">
       <textarea ng-switch-when="true" rows="3" onclick="this.select()">Method: {{error.input || 'N/A'}}
 Result: {{error.originalError ? error.originalError : (error.stack ? (error.name || '') + ' ' + (error.description || error.message) : error)}}
-Stack: {{error.stack}}</textarea>
+Stack: {{error.originalError.stack || error.stack}}</textarea>
       <div ng-switch-default>
         <a href="" ng-click="error.detailsShown = true" my-i18n="error_modal_tech_details"></a>
       </div>