The attribute specified is not valid for the `link` element.

# How do I fix this ?

We've all accidentally used the wrong attribute on the wrong element. Simply remove / update the attribute and you'll be confirming to spec again.

For a preview of the available options on a link element:

| Attribute | Description |
| --- | --- |
| `alternate` | Gives alternate representations of the current document. |
| `archives` | Provides a link to a collection of records, documents, or other materials of historical interest. |
| `author` | Gives a link to the current document's author. |
| `first` | Indicates that the current document is a part of a series, and that the first document in the series is the referenced document. |
| `help` | Provides a link to context-sensitive help. |
| `icon` | Imports an icon to represent the current document. |
| `index` | Gives a link to the document that provides a table of contents or index listing the current document. |
| `last` | Indicates that the current document is a part of a series, and that the last document in the series is the referenced document. |
| `license` | Indicates that the main content of the current document is covered by the copyright license described by the referenced document. |
| `next` | Indicates that the current document is a part of a series, and that the next document in the series is the referenced document. |
| `pingback` | Gives the address of the pingback server that handles pingbacks to the current document. |
| `prefetch` | Specifies that the target resource should be preemptively cached. |
| `prev` | Indicates that the current document is a part of a series, and that the previous document in the series is the referenced document. |
| `search` | Gives a link to a resource that can be used to search through the current document and its related pages. |
| `stylesheet` | Imports a stylesheet. |
| `sidebar` | Specifies that the referenced document, if retrieved, is intended to be shown in the browser's sidebar (if it has one). |
| `tag` | Gives a tag (identified by the given address) that applies to the current document. |
| `up` | Provides a link to a document giving the context for the current document. |

# Resources

* [HTML/Elements/link](https://www.w3.org/wiki/HTML/Elements/link)