inline after subtitle

add_filter('the_content', function ($content) {
	if ( get_post_type() === 'post' && is_single() && ! is_admin() ) {
		if ( JNews\Single\SinglePost::getInstance()->can_render_inline_related_post() ) {
			ob_start();
			?>
			<script>
                (function () {
                    console.log('this is content');
                    let sub = document.querySelector('.jeg_post_subtitle'),
                        line = document.querySelector('.jnews_inline_related_post_wrapper');

                    if (! (sub && line)) return;

                    sub.after(line);
                    line.style.float = 'unset';
                    line.style.width = 'unset';
                })();
			</script>
			<?php
			$content .= ob_get_clean();
		}
	}

	return $content;
}, 100);