What John noted, the error in your code, does exist, you’re going to want to change the_field to get_field. However, because you said this is also within a block and none of your fields are displaying, not just the image due to said error, it’s because you do need to pass the ID when using the_field, as well, so I would try something like:
$image = get_field('partner_logo',get_the_ID());
And ensure the ID is getting passed on any calls within a loop in an ACF block.
