What caused self-repair to keep running

On one of our laptops, W10 home,  this morning Norton didn’t start.  It was OK last night before being turned off. When I tried running it it came up saying running a self-repair. After a time changed to a normal display  but every time I tried clicking anything it again changed to self-repair. After 3-4 times it worked OK. The self-repair report said

 

Norton Security

22.8.1.14

8504, 104

BucketID: AB381C7E

Windows 10 Home

14393.447.amd64fre.rs1_release_inmarket.161102-0100

Norton Autofix Results: 1 item(s)

General Issues :: Success

 

I can’t find anything about what this might be or caused by.What caused self-repair to keep running?