correction not found route

admin_toolbar_tools/admin_toolbar_tools.links.menu.yml

-admin_toolbar_tools.help:
-  title: Tools
-  description: Admin toolbar tools
-  route_name: admin_toolbar_tools.help
-  weight: -15
-  parent: system.admin
-system.admin_index:
-  title: Index
-  description: Admin toolbar tools
-  weight: -10
-  route_name: system.admin_index
-  parent: admin_toolbar_tools.help
 admin_toolbar_tools.flush:
   title: Flush all caches
   route_name: admin_toolbar_tools.flush
@@ -31,16 +19,6 @@ admin_toolbar_tools.flush_menu:
   title: Menu
   route_name: admin_toolbar_tools.flush_menu
   parent: admin_toolbar_tools.flush
-system.run_cron:
-  title: Run cron
-  weight: -8
-  route_name: system.run_cron
-  parent: admin_toolbar_tools.help
-system.db_update:
-  title: Run Updates
-  weight: -6
-  route_name: system.db_update
-  parent: admin_toolbar_tools.help
 admin_toolbar_tools.drupalorg:
   title: Drupal.org
   weight: -5
@@ -60,77 +38,4 @@ admin_development:
   title: Development
   weight: -8
   route_name: admin_development
-  parent: admin_toolbar_tools.help
-#add menu to people
-user.admin_create:
-  title: Add user
-  route_name: user.admin_create
-  parent: entity.user.collection
-  weight: -5
-user.admin_permissions:
-  title: Permissions
-  route_name: user.admin_permissions
-  parent: entity.user.collection
-  weight: -4
-user.admin_create:
-  title: Add user
-  route_name: user.admin_create
-  parent: entity.user.collection
-  weight: -3
-entity.user_role.collection:
-  title: Roles
-  route_name: entity.user_role.collection
-  parent: entity.user.collection
-  weight: -2
-node.add_page:
-  parent: system.admin_content
-node.type_add:
-  title: Add content type
-  route_name: node.type_add
-  parent: entity.node_type.collection
-  weight: -5
-entity.taxonomy_vocabulary.add_form:
-  title: Add vocabulary
-  route_name: entity.taxonomy_vocabulary.add_form
-  parent: entity.taxonomy_vocabulary.collection
-  weight: -5
-entity.comment_type.add_form:
-  title: Add comment type
-  route_name: entity.comment_type.add_form
-  parent: entity.comment_type.collection
-  weight: -5
-entity.menu.add_form:
-  title: Add menu
-  route_name: entity.menu.add_form
-  parent: entity.menu.collection
-  weight: -50
-block_content.add_page:
-  title: Add custom block
-  route_name: block_content.add_page
-  parent: block.admin_display
-  weight: -5
-entity.block_content.collection:
-  title: Custom block library
-  route_name: entity.block_content.collection
-  parent: block.admin_display
-  weight: -4
-entity.block_content_type.collection:
-  title: Types
-  route_name: entity.block_content_type.collection
-  parent: block.admin_display
-  weight: -3
-block_content.type_add:
-  title: Add
-  route_name: block_content.type_add
-  parent: entity.block_content_type.collection
-  weight: -5
-contact.form_add:
-  title: Add contact form
-  route_name: contact.form_add
-  parent: entity.contact_form.collection
-  weight: -5
-#links comments
-comment.admin_approval:
-  title: Unapproved comments
-  route_name: comment.admin_approval
-  parent: comment.admin
\ No newline at end of file
+  parent: admin_toolbar_tools.help
\ No newline at end of file

admin_toolbar_tools/admin_toolbar_tools.module

@@ -40,6 +40,141 @@ function admin_toolbar_tools_help($route_name, RouteMatchInterface $route_match)
  */
 function admin_toolbar_tools_menu_links_discovered_alter(&$links) {
 
+  // If module system is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('system')){
+    $links['system.run_cron'] = array(
+      'title' => 'Run cron',
+      'route_name' => 'system.run_cron',
+      'parent' => 'admin_toolbar_tools.help',
+      'weight' => -8
+    );
+    $links['system.db_update'] = array(
+      'title' => 'Run Updates',
+      'route_name' => 'system.db_update',
+      'parent' => 'admin_toolbar_tools.help',
+      'weight' => -6
+    );
+    $links['system.admin_index'] = array(
+      'title' => 'Index',
+      'route_name' => 'system.admin_index',
+      'parent' => 'admin_toolbar_tools.help',
+      'weight' => -10
+    );
+    $links['admin_toolbar_tools.help'] = array(
+      'title' => 'Tools',
+      'route_name' => 'admin_toolbar_tools.help',
+      'parent' => 'system.admin',
+      'weight' => -15
+    );
+  }
+
+  // If module user is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('user')){
+    $links['user.admin_create'] = array(
+      'title' => 'Add user',
+      'route_name' => 'user.admin_create',
+      'parent' => 'entity.user.collection',
+      'weight' => -5
+    );
+    $links['user.admin_permissions'] = array(
+      'title' => 'Permissions',
+      'route_name' => 'user.admin_permissions',
+      'parent' => 'entity.user.collection',
+      'weight' => -4
+    );
+    $links['entity.user_role.collection'] = array(
+      'title' => 'Roles',
+      'route_name' => 'entity.user_role.collection',
+      'parent' => 'entity.user.collection',
+      'weight' => -2
+    );
+    $links['user.logoutt'] = array(
+      'title' => 'Logout',
+      'route_name' => 'user.logout',
+      'parent' => 'admin_toolbar_tools.help',
+      'weight' => -2
+    );
+  }
+  // If module node is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('node')){
+    $links['node.add_page'] = array(
+      'title' => 'Add content type',
+      'route_name' => 'node.type_add',
+      'parent' => 'entity.node_type.collection',
+      'weight' => -5
+    );
+  }
+  // If module taxonomy is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('taxonomy')){
+    $links['entity.taxonomy_vocabulary.add_form'] = array(
+      'title' => 'Add vocabulary',
+      'route_name' => 'entity.taxonomy_vocabulary.add_form',
+      'parent' => 'entity.taxonomy_vocabulary.collection',
+      'weight' => -5
+    );
+  }
+  // If module comment is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('comment')){
+    $links['entity.comment_type.add_form'] = array(
+      'title' => 'Add comment type',
+      'route_name' => 'entity.comment_type.add_form',
+      'parent' => 'entity.comment_type.collection',
+      'weight' => -5
+    );
+    $links['comment.admin_approval'] = array(
+      'title' => 'Unapproved comments',
+      'route_name' => 'comment.admin_approval',
+      'parent' => 'comment.admin',
+      'weight' => -5
+    );
+
+  }
+  // If module menu_ui is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('menu_ui')){
+
+    $links['entity.menu.add_form'] = array(
+      'title' => 'Add menu',
+      'route_name' => 'entity.menu.add_form',
+      'parent' => 'entity.menu.collection',
+      'weight' => -50
+    );
+  }
+  // If module block_content is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('block_content')){
+    $links['block_content.add_page'] = array(
+      'title' => 'Add custom block',
+      'route_name' => 'block_content.add_page',
+      'parent' => 'block.admin_display',
+      'weight' => -5
+    );
+    $links['entity.block_content.collection'] = array(
+      'title' => 'Custom block library',
+      'route_name' => 'entity.block_content.collection',
+      'parent' => 'block.admin_display',
+      'weight' => -4
+    );
+    $links['entity.block_content_type.collection'] = array(
+      'title' => 'Types',
+      'route_name' => 'entity.block_content_type.collection',
+      'parent' => 'block.admin_display',
+      'weight' => -3
+    );
+    $links['block_content.type_add'] = array(
+      'title' => 'Add',
+      'route_name' => 'block_content.type_add',
+      'parent' => 'entity.block_content_type.collection',
+      'weight' => -5
+    );
+  }
+  // If module contact is enabled.
+  if(\Drupal::moduleHandler()->moduleExists('contact')){
+    $links['contact.form_add'] = array(
+      'title' => 'Add contact form',
+      'route_name' => 'contact.form_add',
+      'parent' => 'entity.contact_form.collection',
+      'weight' => -5
+    );
+  }
  // If module update is enabled.
   if(\Drupal::moduleHandler()->moduleExists('update')){
     $links['update.module_update'] = array(