After migrating a D7 site (which has a bootstrap theme) to a new D8 site and installing Bootstrap theme to the new migrated site,
I got this error:
Drupal\Core\Config\PreExistingConfigException: Configuration objects (bootstrap.settings) provided by bootstrap already exist in active configuration in Drupal\Core\Config\PreExistingConfigException::create() (line 65 of /var/www/html/d8multisite/web/core/lib/Drupal/Core/Config/PreExistingConfigException.php).

Is this problem with migration module or should I first disable bootstrap theme in D7 site before migrating it to D8?


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