---
page_type: error
code: 90003
message: "90003: Unable to fetch plugins from the Custom Plugins URL"
level: ERROR
product: Flex
---

## Description

Twilio could not fetch your Flex plugins from your provided plugins URL

### Possible Causes

- An invalid content type or no content being returned when Twilio tries to retrieve your plugins using the custom plugins URL.

### Possible Solutions

- Check if the custom plugins URL has been set correctly
- The custom plugin URL must return a valid JSON object

See the [Deploying Flex Plugins](/docs/flex/developer/plugins/cli#deploying-to-your-own-cdn) docs for more information.