File won't open. Error "This does not appear to be a SketchUp model"

Hi everyone,

I need help recovering a corrupted file. When I try to open it, SketchUp shows an error message saying that it does not appear to be a SketchUp model.

The file still has its original file size (it is not 0 KB), so the data is there, but I don’t know how to open or repair it.

https://drive.google.com/file/d/1TfYV0vXHlFTVWIPi91CB4-HxpduURw_Q/view?usp=sharing

I have also uploaded the backup file (.skb) just in case: https://drive.google.com/file/d/1PcQtZkF5nfMgHH3v5vJNN2V4UUpj3xPm/view?usp=sharing

Could anyone please help me check if it can be fixed? Thank you so much in advance!