---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/11300#article
headline: "11300: Invalid template URL"
url: https://www.twilio.com/docs/api/errors/11300
inLanguage: en
dateModified: 2026-06-09T11:00:42.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 11300: Invalid template URL

Log Level: ERROR

## Description

This error means the URL template you provided is not in a valid format. A common cause is an unclosed bracket in the template.

### Possible causes

* The template contains unclosed `{` or `}` brackets.
* The template is not a fully qualified URL and is missing required parts such as the protocol, hostname, path, or properly URL-encoded query parameters.
* The URL points to a local or private address that Twilio cannot reach from the public internet.

### Possible solutions

* Review the template and close any unmatched brackets before you save or submit the URL.
* Update the template to use a fully qualified `http://` or `https://` URL with a valid hostname, path, and properly URL-encoded query parameters.
* Make sure the endpoint is publicly reachable. If you are testing locally, expose your application through a public HTTPS tunnel before you configure the webhook URL.
* Review the Twilio Debugger to inspect the failing webhook request and confirm which URL Twilio attempted to use.

#### Additional resources

* [Getting Started with Twilio Webhooks](/docs/usage/webhooks/getting-started-twilio-webhooks)
* [Webhooks Overview](/docs/usage/webhooks/webhooks-overview)
* [Twilio Debugger](/docs/usage/troubleshooting/debugging-your-application)