Stuck on the mission "The Flames Have Been Lit"

So I reach the part where you are supposed to feed Dima. I grab the meat and then go to the place where I'm supposed to steal the sleeping guard. I knock out the guard nearby and then when I press F to grab the dart nothing happens, and then it doesn't give me the option to press F so I'm now infinitely stuck on this mission unless I abort it which I did a few times now and tried to complete the mission again but nothing worked. My game isn't molded BTW.