I was trying to open reminders and noticed it would never work. It would crash. Notes also doesn't sync with iCloud and displays the new startup tab when I open it every time. I tried to see if anything was wrong with the disk and this comes up. I have reset PRAM, I posted this on reddit and someone suggested formatting the hard drive. I have never done this before and want to try other options before doing this. I have backups though so I am good there.