28 minutes into the movie, the morgue drawer door opens behind Megan. On the next shot, that same door is wide open, much more than on the previous shot.
Megan is actually an ex cop and is hired as "night shift" registering bodies also coming from crime scenes without being a forensic doctor.
A key card is required to open the exterior door for the intake bay, but when the first body is delivered during Megan's shift, the ambulance operator is able to leave the building without a key card.
There are two occasions when Megan is using the computer to browse the internet, the browser only has two tabs open but both say 'New Tab', even though she's browsing web pages and not on a newly opened tab. Additionally the address bar can be seen to have no URL on some pages.