> For the complete documentation index, see [llms.txt](https://feathersjs-mongoose.gitbook.io/feathers-mongoose-casl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://feathersjs-mongoose.gitbook.io/feathers-mongoose-casl/docs/guides/error.md).

# Error

{% embed url="<https://docs.feathersjs.com/api/errors.html>" %}

```
const errors = require('@feathersjs/errors');
const {NotFound} = require('@feathersjs/errors');

// If you were to create an error yourself.
const notFound = new errors.NotFound('User does not exist');

// You can wrap existing errors
const existing = new errors.GeneralError(new Error('I exist'));

// You can also pass additional data
const data = new errors.BadRequest('Invalid email', {
  email: 'sergey@google.com'
});

// You can also pass additional data without a message
const dataWithoutMessage = new errors.BadRequest({
  email: 'sergey@google.com'
});// If you were to create an error yourself.
const notFound = new errors.NotFound('User does not exist');

// You can wrap existing errors
const existing = new errors.GeneralError(new Error('I exist'));

// You can also pass additional data
const data = new errors.BadRequest('Invalid email', {
  email: 'sergey@google.com'
});

// You can also pass additional data without a message
const dataWithoutMessage = new errors.BadRequest({
  email: 'sergey@google.com'
});
```