fatal PHP error ACF PRO

Hi, I am using Neptune by Osetin food WordPress theme. In my admin panel, the ACF Pro plugin was marked as needing an update, but I couldn’t update it. So, I deactivated the plugin to try reactivating it, but since then, whenever I view a recipe page while logged into my WordPress account, I get a fatal PHP error, and the page display is broken! I’d like to know how to fix this issue as seen in screenshot below :

The page I need help with: [log in to see the link]