Norton AntiVirus Error with Auto Protect stopped working

Hello,
When I tried to open Norton this error appeared. I don’t know why it says that I need to reinstall my antivirus since I didn’t uninstalled it. I’ve restarted my laptop and it appeared again. Any solution ? What is the problem with my antivirus ?

Norton AntiVirus AutoProtect could not continue.
Please reinstall Norton AntiVirus and restart.
OK
