[Meta] Route "entity.workflow_state.canonical" does not exist

This is to collect all issues and resources for the error: Route "entity.workflow_state.canonical" does not exist.

For the record, ITMT, WorkflowState does have a canonical link:

/**
 * Workflow configuration entity to persistently store configuration.
 *
 * @ConfigEntityType(
 *   id = "workflow_state",
 *   ...
 *   module = "workflow",
 *   links = {
 *     "canonical" = "/admin/config/workflow/workflow/{workflow_type}",
 *     "collection" = "/admin/config/workflow/workflow/{workflow_type}/states",
 *   },
 * )
 */
class WorkflowState extends ConfigEntityBase {...}

Please see the related issues, and below other resources.

• #2935097-11: Route "entity.workflow_state.collection" error - mandatory parameter (workflow_type) missing when deleting a Workflow →
• 🐛 Route "entity.workflow_state.canonical" does not exist." on views.view.workflow_entity_history Fixed removes the capability to add a link to the WorkflowState in Views.
• #3096439: Add redirect/cancel Url for non-node entity in RevertForm → adds fallback for non-existing route "entity.node.workflow_history" in new function WorkflowTransitionRevertForm~getUrl($transition)
• #2969569: Route "entity.node.workflow_history" error for Entities with multiple Workflow Fields per bundle →
• #2923097-17: Add translation tab for Workflow types and states → links to https://www.drupal.org/docs/drupal-apis/entity-api/introduction-to-entit... →
• #2923097: Add translation tab for Workflow types and states → adds "entity.workflow_state.edit_form" and "entity.workflow_config_transition.edit_form"
• #2697031-4: WorkflowConfigTransitionListBuilder serves no purpose → removes canonical link "/admin/config/workflow/workflow/{workflow_type}"
• #2351299-112: Port Workflow module to Drupal 8 → adds initial canonical links to the Workflow module
• #2351299-113: Port Workflow module to Drupal 8 → idem
• https://www.drupal.org/node/2666230#10 → : In case you still have this problem (or for future readers): Drupal Console adds a canonical link path to your generated entity type config entity, even though the route for the canonical path doesn't exist. You need to remove the canonical link from the "links" collection in the @ConfigEntityType annotation.
• #2629864: Error: No link template 'edit-form' found for the 'workflow_config_transition'when deleting a Workflow and pathauto enabled. → : Berdir: "You don't need to have edit-form for deleting, that was an unfortunate conflict with pathauto. We'll make sure to avoid that in pathauto. However, you might have further conflicts in the future with other modules.
  If you don't have an edit form, then you don't need such a link template. So you don't have to add that unless you actually have that form, which doesn't seem to be the case right now. The real problem then seems to be that you have a canonical link template but aren't actually using it. The route is commented out. Other modules *will* assume that when you have a canonical link template, that there is a place to view the entity (that's what's done in 99% of the cases on canonical routes/link templates).
  Config entities are in most cases not viewed, so they shouldn't have a canonical link template.