---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/13336#article
headline: "13336: Gather: Invalid debug value"
url: https://www.twilio.com/docs/api/errors/13336
inLanguage: en
dateModified: 2026-10-27T17:52:37.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 13336: Gather: Invalid debug value

Log Type: APPLICATION

Log Level: WARNING

## Description

Twilio sends this warning when `<Gather>` receives an invalid `debug` value. Set `debug` to `true` or `false`.

### Possible causes

* `debug` is set to a value other than `true` or `false`.

### Possible solutions

* Set `debug` to `true` or `false` in your `<Gather>` TwiML, or remove the attribute.
* Review the `<Gather>` request and TwiML to confirm the value Twilio received.

#### Additional resources

* [TwiML Voice: `<Gather>`](/docs/voice/twiml/gather)
* [Debugging Your Twilio Application](/docs/usage/troubleshooting/debugging-your-application)