---
url: /mobx-view-model/v10/errors/3.md
---
#  Error `#3`: No access to `ViewModelStore`

This happened because the `viewModels` param is not provided when creating a [`ViewModelBase`](/api/view-models/base-implementation) instance.

## Explanation:

This can happen if you override or implement the `createViewModel()` method in your custom [`ViewModelStore`](/api/view-model-store/overview) or [`ViewModelStoreBase`](/api/view-model-store/base-implementation) and forget to pass the `viewModels` param to the ViewModel creation params.

```ts{18}
import {
  ViewModelStoreBase,
  ViewModel,
  ViewModelCreateConfig
} from 'mobx-view-model';

export class ViewModelStoreImpl extends ViewModelStoreBase {
  constructor(protected rootStore: RootStore) {
    super();
  }

  createViewModel<VM extends ViewModel<any, ViewModel<any, any>>>(
    config: ViewModelCreateConfig<VM>,
  ): VM {
    const VM = config.VM;
    const yourCustomConfig = {
      ...config,
      viewModels: undefined,
    }
    return new VM(yourCustomConfig);
  }
}

```

::: info `config` argument in `createViewModel` method already should has `viewModels` property
Because it gets passed from [`<ViewModelsProvider />`](/react/api/view-models-provider)\
Otherwise it will be `undefined`\
:::

## Potential solution

#### 1. Add `ViewModelsProvider`

Use [`<ViewModelsProvider />`](/react/api/view-models-provider) to pass `viewModels` for all created VM instances in React.

Example:

```tsx
export const App = () => {
  return <ViewModelsProvider value={vmStore}>...</ViewModelsProvider>;
};
```

#### 2. Check your custom `createViewModel()` implementation

Check that you pass the `viewModels` param to the ViewModel creation params.