wp-admin will not redirect to wp-login.php

Well the good news is I found the answer, the bad news is the answer is so lame. Apparently I have some ACF Field export files with multiple field groups each wrapped in their own <?php ?> wrapper. Well there was a line break between the two like so:

?>

<?php

And that was enough to break every thing. Lame right? So if you come across this check for white spaces or look for a way to have your host not be so picky about them 😛