Cannot read property 'getHostNode' of null

If anyone else finds this thread. For me this turned out to be a null error for a prop.

Code generating error:

<Menu InventoryCount={this.state.inventoryModel.length} />

Working null checked code:

<Menu InventoryCount={this.state.inventoryModel ? this.state.inventoryModel.length : 0} />

I have run into this issue multiple times in the last few days (new to react) and in almost all the cases, there was some syntax/code error that was not caught anywhere else. One example: If you write:

getInitialState() {
    showModal: false
},

instead of:

getInitialState() {
    return {
        showModal: false
    };
},

you will get this error. That is unless your build process does not already catch the error. Hope this helps someone (or myself in a couple of days. Hi Niyaz, you are welcome!).

I was facing a similar issue. It turns out that, in my case, was highlighthjs removing comments from the generated dom.

For text, React 15 is adding comment with the reactid instead of a span tag, as in:

<!-- react-text: 248-->
Another Search
<!--/react-test-->

Can you try something like this?

<Link className="dark button" to="/"><span>Another Search</span></Link>

This will force the generated DOM to include the span with the proper data-reactid attribute.

I would file an issue with react-router, maybe they can do that internally so you would not have to bother about it. But there are challenges with that as the Link child could be basically anything.