---
title: Coveo object unavailable in Lightning component
slug: '1100'
canonical_url: https://docs.coveo.com/en/1100/
collection: coveo-for-salesforce
source_format: adoc
---
# Coveo object unavailable in Lightning component
## Symptoms

When creating a Lightning component that bundles the Coveo components (see [Integrate Coveo Lightning Aura components in a custom component for your Experience Cloud site](https://docs.coveo.com/en/1193/)) and trying to reference the `Coveo` object, you get an error message that looks like one of the following messages:

```text
Uncaught Action failed: c:communityCoveo$controller$onInterfaceContentLoaded [$ is not a function]
```

or

```text
Cannot read property $ of undefined
```

## Cause

Your custom component likely uses API version 40, which means that Lightning Locker is automatically enabled.
When Lightning Locker is enabled, the `window` object isn't shared with other components.

## Resolution

Your custom component needs to use an API version prior to 40.0.

. In Salesforce, open the **Developer Console** (see [Open the Developer Console](https://help.salesforce.com/articleView?id=code_dev_console_opening.htm)).
. Open your custom component.
. In the right sidebar, select **Bundle Version Settings**.

. In the **Bundle Version Settings** window, next to **API Version**, select an API version prior to 40.0.
. Select **Save**.