"Page not found" with CiviCRM 5.31 when managing rules
I Installed CiviRules 2.19 on a fresh CiviCRM 5.31 with Drupal 8, but after navigating to CiviCRM > Administer > CiviRules > Manage Rules I am presented with an error "Page not found". I understand that according to CiviRules' extension page version 2.19 does not officially support CiviCRM 5.31, but I can confirm it works with CiviCRM 5.17 on Drupal 7 and there are indications such as #74 that CiviCRM 5.23 does at least not break with a "Page not found" error.
Navigating to CiviCRM > Administer > CiviRules > New Rule also throws the same error, but strangely, navigating to CiviCRM > Administer > CiviRules > CiviRule Tags works.