While Jamie and Eddie are talking in the hallway, the clock behind Jamie changes from 11:10 to 11:50 and back several times.
When Danny's chasing Arturo, he trips and falls on a deck chair and lands on the deck. In the next scene, he's still on his feel and trips on the same chair without falling.
When Jamie and Eddie are at the bar, the level of Jamie's drink goes from almost empty to almost full between takes.
The young black girl who OD'ed on heroin was kept overnight for observation. Heroin is rapidly metabolized to morphine which has a half-life of 2-4 hours. after 12 hours of observation which is at least 3 half-lives, 1/8 or less of the heroin would be left in her system. That would hardly be enough to cause death. Also, hospital would not have discharged her with a lethal amount of heroin or morphine in her system.
In the scene where officer Reagan administers Naloxone, he is show injecting it into her arm. Unless a state certified paramedic, Naloxone is always administered as a spray in the nostrils by other first responders.
When Danny is trying to apprehend the groundskeeper, he pulls his gun. A gun cocking sound is heard, but he does not cock the gun.