I have the same problem!
Hi @Amir_Darejeh,
And do you have them in the upgraded installation?
It would be maybe best to start a new clean upgrade via CLI and report the first warnings/errors that you see. – Somehow I do not know any more where in the upgrade process you have the problems – it seems that you have problems because some files are missing or so…
@draak, it is the same for you – you would need to provide more detailed information – to start the clean upgrade via CLI and report the first warnings/errors that you see…
Best,
Bozana