Page is completly broken after Upgrade from 2.1.9 to 2.2.0

[BlackstoneFatih]

Hi,

I wanted to upgrade my Magento 2.1.9 to 2.2.0 after the update, my Page went completly broken.

This is what appears, when I want to acces the Frontend Page

This is what happens, when I want to acces the Web Setup Assistant

The Admin Backend looks normal. Can anybody help asap? It's very important for me! 

Thanks in advance!

[gelanivishal]

Hello @BlackstoneFatih,

Please share report content here 

Thank you.

[Rakesh Jesadiya]

Kindly check your report log from var/report folder.

Find specific report id file from list of report file and edit file and check which error will shown in report file.

If your error is 3243254234234 then open file from var/report folder like 3243254234234

[BlackstoneFatih]

I've used the following method to downgrade my version back to 2.1.7 by using the following method. https://community.magento.com/t5/Magento-2-x-Version-Upgrades/Is-there-a-way-to-revert-from-2-1-6-ba...

Please upgrade your database: Run "bin/magento setup:upgrade" from the Magento root directory. 
The following modules are outdated:
Magento_Catalog schema: current version - 2.1.4, required version - 2.1.3
Magento_Catalog data: current version - 2.1.4, required version - 2.1.3
Magento_Quote schema: current version - 2.0.4, required version - 2.0.3
Magento_Quote data: current version - 2.0.4, required version - 2.0.3
Magento_Usps schema: current version - 2.0.1, required version - 2.0.0
Magento_Usps data: current version - 2.0.1, required version - 2.0.0