Please help to know why single.php crashes after I add this code [closed]

You’re missing <?php and ?>

<?php

if( in_category( 'movies' ) ) {    // this (end php, start html) -> ?> 

    <span style="font-size:16px">
        <strong>Movie:</strong> <?php the_field( 'movie_name' ); ?> (<?php the_field( 'movie_year' ); ?>)<br/>
        <strong>IMDb:</strong> <?php the_field( 'imdb_link' ); ?><br/>
        <strong>Rotten Tomatoes: <?php the_field( 'rt_link' ); ?> <br/><br/>
    </span>
    <br/><br/> <?php // <- this (end html, start php)
} ?>