> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error ERR_NGROK_SHIP_ENVIRONMENT_VAR_VALUE_EXPRESSION_INVALID

## ERR\_NGROK\_SHIP\_ENVIRONMENT\_VAR\_VALUE\_EXPRESSION\_INVALID

Environment variable `KEY` has an invalid expression: `REASON`

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_SHIP_ENVIRONMENT_VAR_VALUE_EXPRESSION_INVALID)


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