# Javascript Routing Issue in Aurelia

**URL:** <https://discourse.aurelia.io/t/javascript-routing-issue-in-aurelia/3546>\
**Category:** Uncategorized\
**Created:** [June 3, 2020, 1:05pm UTC](https://discourse.aurelia.io/t/javascript-routing-issue-in-aurelia/3546 "2020-06-03T13:05:19Z")\
**Posts on this page:** 1\
**Showing post:** 16

<div class="post-metadata">

**Author:** ![prempalani](https://avatars.discourse-cdn.com/v4/letter/p/858c86/32.png) [@prempalani](https://discourse.aurelia.io/u/prempalani)\
**Post date:** [June 16, 2020, 4:08pm UTC](https://discourse.aurelia.io/t/javascript-routing-issue-in-aurelia/3546/16 "2020-06-16T16:08:21Z")

</div>

Tried with below code. still getting same error. ERROR [app-router] Router navigation failed, and no previous location or fallbackRoute could be restored.

configureRouter(config, router) {  
debugger

```
    config.title = 'Assessment Renderer';

    config.map([
        {
            route: 'saas-encounter-control',
            name: 'EncounterSummary',
            moduleId: '../src/controls/edit-mode/saas-controls/saas-encounter-control',
            nav: false,
            breadcrumb: false
        },
        {
            route: 'saas-encounter-detail',
            name: 'EncounterDetail',
            moduleId: '../src/controls/edit-mode/saas-controls/saas-encounter-detail',
            nav: false,
            title: 'Encounter Details'
        },

    ]);

    config.mapUnknownRoutes('../src/error/error');

    this.router = router;

}
```

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