Unexpected file format sketchup maybe there is a solution

SketchUp
1

Hello! I have a problem with my sketchup saved file. I’ve read a lot of topics about this problem and saved my files in a proper way. But two of them unfurtunetly doesn’t open, i have skp and skb. Please, maybe someone can help me? Here my filies. Sketchup - Google Drive

Thanks in advance!

2

I think the two files are the same thing, but I rescued both anyway:

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3

OMG, thank you so much! You have saved my 2 days of works! Happiness to you and a lot of health!