Upgrading Drupal

hallo,

habe Drupal 8.5.6 von meinen Hoster installiert.
Nun zeigt mir Drupal eine Aktualisierung auf 8.6.1 an.
Datei auf den Rechner Runtergeladen
"drupal-8.6.1.tar.gz"

Wenn ich die Aktualisierung durchführen lasse, kommt diese Fehlermeldung:

<Zitat:

Das automatische Aktualisieren des Drupal-Kernsystem wird nicht unterstützt. Weitere Informationen über das manuelle Aktualisieren von Drupal sind in der Durpal-Dokumentation im Abschnitt Drupal aktualisieren verfügbar.

Zitat END>

My site (kacbtn.org) got trashed when I tried to update it to 8.6.1, so I updated it at home, with no apparent issues, and then moved it to my JustHost. The main page mostly works, but all of the other pages give an internal server error (today). Yesterday I got "your website encountered and error."

./drush watchdog-show yields multiple notices:

I tried to update with composer from 8.5.6 to 8.6.1, however it was just updated to 8.5.7??

Also modules: Token and Token_Filter, were not updated.

All updates in the past were ok with composer.

Please advise!

D6 site is built with a lot of CCK fields, custom modules and lots of other non-documented fun and games (not built by me!)

D8 is 8.6.1 fresh new build via standard composer template

Hello,

I am getting "The website encountered an unexpected error. Please try again later." after updating to 8.6.1 instead of showing website home page.

Can anyone help me to find a solution?

This is the contents of error_log file 

I have upgraded my website to Drupal 8 from Drupal 7. Recently after upgrading, I noticed the following. Can someone guide me how to resolve this issue or point me to the right platform where I can post this issue if this is not the right forum for this issue?