---
page_type: error
code: 90000
message: "90000: Uncaught Flex JavaScript Exception"
level: ERROR
product: Flex
---

## Error - 90000

### Uncaught Flex JavaScript Exception

A JavaScript error has occurred within Flex UI.

#### Possible Causes

- There may have been an issue initializing Flex
- There may be an uncaught exception within a Flex plugin