Did you reset you laptop/computer? Is a virus or something inside the game? Do you have other saves you could open? What happened the last time you opened your game?(As in you could edit it and get in Roblox studio.) What type of computer are you on?
Edit: Did you look at other posts on dev forums this has happened before. Eg: Could not open place "" with exception: Unable to open the place bug on specific Team Create place
And
Unable to open the place (error)
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