Use the new update instructions. Click here for detailed instructions.
Alternatively, you can update your site in two steps.
Update to Varbase 8.4.28, then run
drush updb to migrate your media entities to the core Media.
After first steps is successful, update to the most recent version of Varbase.
Varbase follows Drupal 8 release cycle. Therefore, a version of Varbase that is named 8.x-5.x uses the same major version of Drupal 8.x-5.x.
Read the Release Cycle and Supported Versions to understand more.
We have developed a mechanism to handle and detect this scenario. Read how the new
composer-patches package developed by Vardot will handle these cases.
Note, you'll need to have Varbase 8.6.3 to make use of this plugin.