Hi NewGuy

Have you tried wrap a null check around before you call the Url property of the image? 

Something like this:

var k = 1;
foreach (var solItem in CurrentPage.solutionTypeIcon)
{
    {
        IPublishedContent solIconImg = Umbraco.TypedMedia(solItem.solImage.ToString());

        var newRow = (k % 2 == 0) ? "</div><div class='row'>" : "";
        <div class="col-sm-6">
            <a class="learn-more" href="#">
                @if(solIconImg != null)
                {
                    <img src="@solIconImg.Url">
                }
                <span>@solItem.solHeading</span>
            </a>
        </div>
        k++;
    }
}

/Bjarne