Technology baffles me, but at least my photo-syncing issues are fixed!

I have always been a troubleshooter. My latest issue with upgrading my Mac mini to the Sierra OS and then attempting to sync my photos to my phone has been fixed. I simply don't know which change that I performed actually fixed everything.

Technology is odd. I am immersed in it at work. It's an interest of mine, too. It's such a love-dislike relationship.

Anyway, I have done a few things to fix this issue:

1. Changed the properties of my Photos library so that read and write access is granted to all programs accessing it.
2. Powered off and on my external hard drive, which houses my iTunes library.
3. Tried to rebuild my library by pressing the Option + Command (Ctrl + Alt) keys. I didn't get the repair option, so I loaded my photos library as normal.
4. Started iTunes. I tried syncing both my iPod classic (yes, I still own one, as it fits my entire music collection, which is large) and iPhone. Both actions prompted an error message indicating that my photos library was unavailable.
5. Closed my Photos program.
6. Tried syncing my iPhone again. My photos synced!
7. Synced my iPod again. It synced successfully, too!

Again, I did a bizarre set of steps. It will be a miracle if all this syncing works tomorrow. I can then get on with writing about my last spanking.

There are days where I want to book some time away from technology, fly to some tropical location, lounge around, and write in a ruled notebook with a fountain pen. It sounds perfect right about now.