For the chapter "A Friend Of Ours", Vito is required to pay a visit to Eric, who has been bullying Vito's sister. However, when I reach the place where he is supposed to find Eric, which is on the third level of the building, the room is non-existent. The music can be heard but the room is transparent, like I can look through it and see the next building. I have attempted to reload the chapter a few times but it doesn't work.

Anyone can help me regarding this? I can't proceed to the next chapter like this. Alternatively, I would greatly appreciate it if there is a file available for download that unlocks all the chapters. I found some online but I have no idea how to install them. Thank you very much.