Display all Post titles with Category and Tag

As suggested in a comment, the best approach here will be to make use of a tax_query. You have much more flexibility and the ability to run more complex queries specially when you are working with more than one taxonomy (in this case category and post_tag).

You can try something like this

$args = [
    'tax_query' => [
        'relation' => 'AND',
        [
            'taxonomy'         => 'category',
            'field'            => 'term_id',
            'terms'            => the_field('troubleshooting_category'),
            'exclude_children' => true
        ],
        [
            'taxonomy'         => 'post_tag',
            'field'            => 'term_id',
            'terms'            => 5,
        ],
    ],
];
$q = get_posts( $args );