Manual update fail... Help me

[kleo]

I use hosting and therefore I do not have the opportunity to update the system as recommended by you.
I probably did something wrong with the manual...

[kleo]

Unfortunately, the error remained...

[kleo]

I have updated the system from 8.3.6 to 8.4.2 manual.

Probably I did something wrong there, but all the calls were no longer visible and...