You don't understand what I'm telling you. I gave you a link to a thread with similar error messages you observe. You were supposed to check this thread, and if the suggestions there apply and fix your issues, run the scripts in the post.d/ directory again to complete the upgrade.
I did exactly what you suggested. I am sorry if I gave you the impression that I did NOT follow them. And, right, I am just a lousy old user, who has half the time no clue, sorry for my lack of knowledge, thats why I am looking for help, i am just too stupid to get problems like this solved on my own. Give me a f..x..ed car, machine, aeroplane, broken cupboard or leaking plumbing, THERE I can help, here I need help.
I did what was done in the thread you gave the link, which was, btw, without any error message, run your scripts again without success, or, the same errors as before. And, as written in#115, you were definitely right, the upgrade was not complete.