ACF PHP if else layout - banner/slideshow

I am new to ACF and PHP, I am getting an error, but I am not sure what I am doing wrong.

<!--BANNER STATIC OR SLIDESHOW LAYOUT-->
<?php if(get_row_layout() == 'banner'): // layout: Content ?>
    <section class="banner">
        <?php
         $sbimage = get_field('static_banner'); // Array returned by Advanced Custom Fields
         $sbimageAlt = $sbimage['alt']; // Grab, from the array, the 'alt'
         $sbimageWidth = $sbimage['width']; // Grab, from the array, the 'width'
         $sbimageHeight = $sbimage['height']; // Grab, from the array, the 'height'
         $sbimageThumbURL = $sbimage['sizes']['large']; //grab from the array, the 'sizes', and from it, the 'thumbnail'
        ?>
        <?php if(get_field('static_banner')): ?>
        <a href="<?php the_field('static_url'); ?>">
        <img src="<?php echo $sbimageThumbURL;?>"  alt="<?php echo $sbimageAlt; ?>"  width="<?php echo $sbimageWidth; ?>"  height="<?php echo $sbimageHeight; ?>" /></a>
    </section>
<?php else: ?>
    <section class="banner">
        <?php the_field('slideshow_banner'); ?>
    </section>
<?php endif; ?>