getting image from ACF

Thank you for your question. As other said, you can’t mix shortcode in the HTML attributes.

You’ll need to edit the Ultimate Members PHP template. Check in their doc how to edit them in a child theme to not lose them on Ultimate Member update.

You will need to make something like:

<?php
if ( function_exists( 'the_field' ){
?>
    <img src="<?php the_field( 'company_logo' );?>">
<?php
}