I migrated my domain to the vps standard from the shared plan. Upon completion I'm getting lots of different header information errors like:

Warning: Cannot modify header information - headers already sent by (output started at /packages/enlil_transparency/controller.php:50) in /updates/concrete5.6.2.1_updater/concrete/core/libraries/view.php on line 957

it only happened on select sites, as some still work fine! I'm hoping somebody has some insight before i start digging...