I've never had a problem with most ren'py games before , so no it's not an error log and I've played a lot of visual novels, my anti-virus never really flags them as threats but it won't open at all when I click on it which is quite weird. There are some games that are just not compatible with my mac but I'm pretty sure it had a different message in those cases when i was just unable to expand the zip, I can't tell what the problem is.
(un)luckily, I found another game that isn't compatible with my mac so i can show you the difference between the two. The second image is another game, when a game is not functionable on my mac the application itself has a gray circular cross symbol on it, while this game simply says it can't be opened and has an.. odd symbol as a placeholder for the logo