mybase data file corrupt, invalid version number detected in data stream

I am accustomed to using mybase to record my work or study materials. In the past few months, a study material that is almost 2G, when I open the .nyf file in the morning, it prompts: an invalid version number is detected in the data stream, and the English prompt is "Incorrect" version number detected in data stream"
Fortunately, I made a backup not long ago. The worst case is to restore the latest data. I don't need to have everything gone. I'm glad I made a backup. So don't panic, try looking online to see if you can find a fix.
I read a post saying that you can use the "Nyf-Repair-Tool" tool to repair the damaged .nyf file. I downloaded it and tried it. I was lucky. It was repaired the first time, saving a lot of trouble.
Download link: http://www.wjjsoft.com/downloads/Nyf-Repair-Tool.zip
It must be backed up in time in the future, and back up every update. This also reminds me of the importance of backup in the enterprise. If there is no good backup plan, when something goes wrong, the loss will be immeasurable. Backup is to give you a strong psychological support in the event of a failure. Otherwise, there is no backup plan. When a failure occurs, the whole person will panic at first, which has a great impact on the logical thinking of dealing with the failure.