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.
);
        expect(e.getAttribute('xlinkhref')).toBe(
          'http://i.imgur.com/w7GCRPb.png',
        );
      });
      itRenders('svg element with a tabIndex attribute', async render => {
        let e = await render(<svg tabIndex="1" />);
        expect(e.tabIndex).toBe(1);
      });
      itRenders(
        'svg element with a badly cased tabIndex attribute',
        async render => {
          let e = await render(<svg tabindex="1" />, 1);
          expect(e.tabIndex).toBe(1);
        },
      );
      itRenders('svg element with a mixed case name', async render => {
        let e = await render(
          <svg>
            <filter>
              <feMorphology />
            </filter>
          </svg>,
        );
        e = e.firstChild.firstChild;
        expect(e.childNodes.length).toBe(0);
        expect(e.tagName).toBe('feMorphology');
        expect(e.namespaceURI).toBe('http://www.w3.org/2000/svg');
      });
      itRenders('a math element', async render => {