Unfortunately, the simple browser based upgrade path did not work. Look into using Drush instead.
Drush is a command line shell and scripting interface for Drupal. Upgrading to Drupal 8 using Drush is an alternative to using the browser user interface. Upgrading to Drupal 8 using Drush is very useful when migrating complex sites as it allows you to run migrations one by one and it allows rollbacks.
Unfortunately, the simple browser based upgrade path did not work. Look into using Drush instead.
Drush is a command line shell and scripting interface for Drupal. Upgrading to Drupal 8 using Drush is an alternative to using the browser user interface. Upgrading to Drupal 8 using Drush is very useful when migrating complex sites as it allows you to run migrations one by one and it allows rollbacks.