This might be a reference to this one: https://github.com/facebook/react/issues/10212#issuecomment-346302374

The problem still exist.

So, trying to render with server side and got this error. I don't have this notation in my code but this might be a problem with dependencies.

```
TypeError: Cannot read property 'toLowerCase' of undefined
    at ReactDOMServerRenderer.renderDOM (/Users/lukasborawski/Dev/web-client/node_modules/react-dom/cjs/react-dom-server.node.development.js:2304:27)
...
```

```
"react": "^16.1.1",
"react-dom": "^16.2.0",
```

Thx for help.
REACT_CALL_TYPE,
  REACT_RETURN_TYPE,
  REACT_PORTAL_TYPE,
  REACT_PROVIDER_TYPE,
  REACT_CONTEXT_TYPE,
} from 'shared/ReactSymbols';
import {
  createMarkupForCustomAttribute,
  createMarkupForProperty,
  createMarkupForRoot,
} from './DOMMarkupOperations';
import escapeTextForBrowser from './escapeTextForBrowser';
import {
  Namespaces,
  getIntrinsicNamespace,
  getChildNamespace,
} from '../shared/DOMNamespaces';
import ReactControlledValuePropTypes from '../shared/ReactControlledValuePropTypes';
import assertValidProps from '../shared/assertValidProps';
import dangerousStyleValue from '../shared/dangerousStyleValue';
import isCustomComponent from '../shared/isCustomComponent';
import omittedCloseTags from '../shared/omittedCloseTags';
import warnValidStyle from '../shared/warnValidStyle';
import {validateProperties as validateARIAProperties} from '../shared/ReactDOMInvalidARIAHook';
import {validateProperties as validateInputProperties} from '../shared/ReactDOMNullInputValuePropHook';
import {validateProperties as validateUnknownProperties} from '../shared/ReactDOMUnknownPropertyHook';
type ReactNode = string | number | ReactElement;
type FlatReactChildren = Array<null | ReactNode>;
type toArrayType = (children: mixed) => FlatReactChildren;
const toArray = ((React.Children.toArray: any): toArrayType);