Fatal error: Uncaught Error: Class "Drupal\migrate\ProcessPluginBase" not found in /home/.sites/939/site4167048/web/2020/core/modules/path/src/Plugin/migrate/process/d6/UrlAliasLanguage.php:17
Stack trace:
#0 {main}
  thrown in /home/.sites/939/site4167048/web/2020/core/modules/path/src/Plugin/migrate/process/d6/UrlAliasLanguage.php on line 17