export const metadata = {
  title: `Test Errors`,
}

# {metadata.title}

## Loaders for module Workflows failed

If you get the following error when running your tests:

```bash
Loaders for module Workflows failed: Method Map.prototype.set called on incompatible receiver #<Map>
```

This may occur if you have multiple test files and you don't configure your Jest environment correctly. To resolve this, add the following configuration to your `jest.config.js` file:

```js title="jest.config.js"
module.exports = {
  // ...
  setupFiles: ["./integration-tests/setup.js"],
}
```

Then, create the `integration-tests/setup.js` file with the following content:

```js title="integration-tests/setup.js"
const { MetadataStorage } = require("@mikro-orm/core")

MetadataStorage.clear()
```

Learn more about configuring test tools in [this documentation](!docs!/learn/debugging-and-testing/testing-tools)