Drupal 8 - Upgrade pathauto

By xngo on August 17, 2020

I haven't upgrade Drupal for more than 6 months now. Today, I upgraded to Drupal v8.9.3 and all the modules. Then I got the error message "The website encountered an unexpected error." Going to any pages and it is showing that error message. My whole website was down. Then, I tried the /update.php page, it showed the message that the "Token modules has a schema key/value store missing"(Don't remember the exact wording) and it is referring to https://www.drupal.org/node/3137656, which is not helpful.

Then, I ran drush ws and it is showing the following error message.

Drush command terminated abnormally due to an unrecoverable error.

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: The service "pathauto.generator" has a dependency on a non-existent service "token.entity_mapper". in Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass->processValue() (line 31 of /home4/openwrit/public_html/opw/vendor/symfony/dependency-injection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php).

At that moment, I can't run anything with drush, can't disable nor uninstall any module.

After searching on Google, I found this issue https://github.com/md-systems/pathauto/issues/128 but the resolution on that issue doesn't work for me. I extracted and overwrote Token, Ctools and PathAuto directories but it still showed that error.


By luck, I decided to delete PathAuto folder and run /update.php. And, it worked. Then, I proceed to install all the other modules and finally reinstall PathAuto.

About the author

Xuan Ngo is the founder of OpenWritings.net. He currently lives in Montreal, Canada. He loves to write about programming and open source subjects.