I’ve been trying to open my place for an hour. I keep getting this. There’s not much info I can give regarding this bug, the only cause I could guess for this bug would be that it occur at places that contain a lot of unique asset ID (sounds, textures or mesh). This is because I can open places with less assets fine.
The bug happens at this place as far as I know.
Have you tried downloading the place file? The HTTP error seems to be a timed out request which I’m not an expert on but it could be related to your internet connection or Roblox’s servers. Maybe if you download it, you might be able to open the place file. Below, I have left a link for you to download your place and quoted instructions that may be helpful for downloading the place file.