I have this snippet in a LocalBusiness listing (based on this example):
<div itemscope itemtype="http://schema.org/LocalBusiness">
    <div itemprop="image" itemscope="" itemtype="http://schema.org/ImageObject">
        <img itemprop="contentUrl" src="/images/trouwlocatiefotos/medium/315_24_83_Veranda-005.jpg">
    </div>
</div>  
But Google's structured data testing tool throws an error:
image
A value for theimagefield is required.
Why is it throwing the error?
Testing the URL directly: https://search.google.com/structured-data/testing-tool#url=https%3A%2F%2Fwww.wonderweddings.com%2Fweddingvenues%2F315%2Fbeachclub-sunrise
