Sketch up failed to open document

Hello everyone, I am working on an important project and when I reopen it again, it failed to open document. I have tried to fix it for a few days but it still doesn’t work. Anyone can help me to fix this problem? I really need the file
Please help me

File link:

Hello, if you upload your file (if too big for the forum use any cloud service), @colin may check it up and see if anything is recoverable
Good luck

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