# FAQ

## General

### I'm getting an error that `router` is not found?

This is a particular issue of using `vue-resource` that requires `Vue.router` to be set before the plugin is initialized.

### I've logged in successfully but it's not working after

Likely related to token issues with a valid token not being sent back. First steps are to fully verify that the token is indeed being sent back.

### Why is the token not being set?

By default the plugin will look for a token in `Authorization` header. This is controlled by one of the [auth](https://github.com/websanova/vue-auth/tree/master/drivers/auth) drivers. These are simple drivers that simple set and get a token. It's best to start debugging here if there are issues with tokens.

### How can I authenticate without using the `Authorization` header?

The token can be supplied anywhere in your app response. The provided [auth](https://github.com/websanova/vue-auth/tree/master/drivers/auth) drivers are common methods for authenticating users in single page apps. Simply view any of the [auth](https://github.com/websanova/vue-auth/tree/master/drivers/auth) drivers as a guide to write your own custom driver.

### My app has 2 or more fields required for authentication?

In this case write a custom [auth](https://github.com/websanova/vue-auth/tree/master/drivers/auth) and simply append the fields together using some kind of separator such as a pipe (`|`), semicolon (`;`), etc.


## Axios

### I only see `Error: Request failed with status code 400...` text when I print out the error?

The response from Axios is contained within the response object. You should try to `console(res.response)`.

### Why is the body param not sending my data?

Note that `vue-auth` simply forwards all the arguments into whatever http plugin/module you are using. So for `vue-axios` it will be a `data` parameter and for `vue-resource` it's a `body` parameter.