---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/45600#article
headline: "45600: Flex UI error"
url: https://www.twilio.com/docs/api/errors/45600
inLanguage: en
dateModified: 2026-03-11T20:01:16.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 45600: Flex UI error

Log Type: APPLICATION

Log Level: ERROR

## Description

Flex UI instance experienced a thrown Flex UI Error A JavaScript error has occurred within Flex UI.

### Possible causes

* There may have been an issue initializing Flex UI (no network, wrong config)
* There may be an error happening in Flex UI code
* There may be an error happening in user's custom code/plugin

### Possible solutions

* Fix custom code
* Fix configuration