Fail to open Document sketchup model

I Have a problem with file opening, there is an error message " failed to open document"

We might be able to help you if you share the .skp file. If it’s larger than 16 Mb, upload it to DropBox or We Transfer and share the link.

Where have you been saving the file as you’ve been working on it? In the cloud? On and external drive?

Are you using a cracked version of SketchUp 2021?

Your profile says you are using 2021 but the file appears to be a corrupted 2024 version file.

The model was built in the 2021 pro version, but recently I also installed the 2024 Sketchup on my computer, not sure if I had clicked on this model with 2024 or not.
I don’t use cracked version Sketchup

Unfortunately, about 3/4 of that file is filled with zeros and is unrecoverable. Were you saving it over a network, to the cloud, or on an external drive? Those are common sources of this kind of error (yes, it’s SketchUp’s fault, but the devs haven’t been able to figure exactly why it happens). Do you have any kind of backup, e.g. the skb file, that could be tried?

I saving it over our office network, possibly over the VPN connections.

I have a .SKB file that dated back almost 2 month ago