It would be tremendously helpful to know the error - What is the error message appearing or what does happen or not?
Also please add your OS version as well as the exact (not 'current') Version of Lightroom.
The fact that it has happened 3 times already indicates you could possibly have a hard disk that is malfunctioning. But I agree with McLion, please give us the exact information.
I have windows 10 Pro version 1703
lightroom CC 2015-12
The error I receive is the Catalog is corrupt Please close and lightroom will attempt to fix. I close it and reopen , the attempt fails. The only option I have is open a different catalog. I try to open a back up version catalog and That will error as corrupt as well.
I am going to replace my hard drive just in case. I will post again if this does not correct the problem .. Thank you !