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.namespaceURI).toBe('http://www.w3.org/2000/svg');
        expect(e.getAttribute('viewBox')).toBe('0 0 0 0');
      });
      itRenders(
        'svg child element with a namespace attribute',
        async render => {
          let e = await render(
            <svg>
              <image xlinkHref="http://i.imgur.com/w7GCRPb.png" />
            </svg>,
          );
          e = e.firstChild;
          expect(e.childNodes.length).toBe(0);
          expect(e.tagName).toBe('image');
          expect(e.namespaceURI).toBe('http://www.w3.org/2000/svg');
          expect(e.getAttributeNS('http://www.w3.org/1999/xlink', 'href')).toBe(
            'http://i.imgur.com/w7GCRPb.png',
          );
        },
      );
      itRenders('svg child element with a badly cased alias', async render => {
        let e = await render(
          <svg>
            <image xlinkhref="http://i.imgur.com/w7GCRPb.png" />
          </svg>,
          1,
        );
        e = e.firstChild;
        expect(e.hasAttributeNS('http://www.w3.org/1999/xlink', 'href')).toBe(
          false,