<!-- 0Gkit docs — CONFIG_MISSING_ENV
     Source: https://docs.0gkit.com/errors/CONFIG_MISSING_ENV
     LLM-friendly Markdown twin of the page. -->

# CONFIG_MISSING_ENV

**Missing required environment variable**

## What happened

A required environment variable (e.g. `ZEROG_PRIVATE_KEY`, `ZEROG_BROKER_KEY`) was not set when the primitive was constructed.

## How to fix

Set the variable in your shell or `.env` file before invoking the CLI / starting your app. For local dev, copy `.env.example` to `.env` and fill it in.

## Example

```ts
// .env
ZEROG_PRIVATE_KEY=0x...
ZEROG_NETWORK=galileo
```

## Reference

- Namespace: `CONFIG`
- Help URL: `https://0gkit.com/errors/CONFIG_MISSING_ENV`
- See also: [all error codes](/errors)