> For the complete documentation index, see [llms.txt](https://docs.aurelia.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurelia.io/developer-guides/error-messages/router/aur3155.md).

# AUR3155

## Error Message

`AUR3155: Failed to resolve RouteContext from node %s; error: %s`

## Description

This error is logged when the router attempts to resolve a `RouteContext` from a DOM node, but resolution fails (for example because the node is not associated with an Aurelia controller or an unexpected error occurs while walking up the tree).

## Example Trigger

* Passing a DOM node outside of the Aurelia app to an API that tries to resolve `RouteContext`.

## Troubleshooting

* Ensure the node you pass is part of the Aurelia app’s DOM.
* If you are manipulating the DOM directly, prefer router/Aurelia composition APIs so controller associations are preserved.
* Inspect the second `%s` value (the error) for the underlying cause.


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