Upgrading Drupal

I'm getting the following error while attempting to run update.php after an apparently successful upgrade from Drupal 9.5.11 to 10.1. I would be grateful for any guidance.

system module

Update #10100

When updating Drupal 8.9 to Drupal 9.5.11, a message was received about the incompatibility of a number of modules, as well as about the incompatibility of installed themes. At the same time, the entire visual part of the site works on these topics.

I already have Drupal 9 site, and now have new installation of Drupal 10 - Installed by composer with nginx on debian - on a different machine.

The new one are empty without any content/modules..

I have backup of  MySQL database of the old site:

How can I import the old database to the new site? Can import content and modules and all views etc?

Please advise what can import in order to save time while launching the new site.  

I am upgrading Drupal 8.9 to 9.5 first time and I am facing an error when I run the update.php on the server the error is given below. On my local setup, this upgrade was successful. The below error shows the default plugin does not exist but when I check on it all plugins exist. Now I can't be able to solve this problem and don't have any idea how to fix it. Please let me know how I can do this.

Thank you in advance

We have Drupal 10 running on a test server but have not upgraded production yet. One of the blockers is that we are getting JavaScript errors when editing certain pages. For example:

Hello,

I encountered an issue when importing the dump from my 9.3 site to my 9.5.10 site

I have both instances running on separate docker containers. I tried all possible variants, but it seems like some data in my database prevents the Advanced Aggregator from working properly (I say this because when I use my 9.5.10 instance with MYSQL 8 on an empty database, it just works).

I get this error on the homepage: