when I click "Provision templates" on the web UI, I got this message:
Oops, we're sorry but something went wrong undefined method `key?' for :template_kind:Symbol

System version:
Distributor ID: Ubuntu
Description: Ubuntu 20.04.3 LTS
Release: 20.04
Codename: focal

Error log:
2021-08-24T08:02:21 [I|app|bf57cef4] Started GET "/templates/provisioning_templates" for 10.20.11.101 at 2021-08-24 08:02:21 +0000
2021-08-24T08:02:21 [I|app|bf57cef4] Processing by ProvisioningTemplatesController#index as HTML
2021-08-24T08:02:21 [W|app|bf57cef4] undefined method `key?' for :template_kind:Symbol
2021-08-24T08:02:21 [I|app|bf57cef4] Backtrace for 'undefined method `key?' for :template_kind:Symbol' error (NoMethodError): undefined method `key?' for :template_kind:Symbol
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/foreman_puppet-1.0.0.rc.1/app/models/concerns/foreman_puppet/extensions/provisioning_template.rb:49:in `block in template_includes'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/foreman_puppet-1.0.0.rc.1/app/models/concerns/foreman_puppet/extensions/provisioning_template.rb:49:in `each'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/foreman_puppet-1.0.0.rc.1/app/models/concerns/foreman_puppet/extensions/provisioning_template.rb:49:in `detect'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/foreman_puppet-1.0.0.rc.1/app/models/concerns/foreman_puppet/extensions/provisioning_template.rb:49:in `template_includes'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/relation/delegation.rb:107:in `public_send'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/relation/delegation.rb:107:in `block in method_missing'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/relation.rb:407:in `block in scoping'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/relation.rb:784:in `_scoping'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/relation.rb:407:in `scoping'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/relation/delegation.rb:107:in `method_missing'
bf57cef4 | /usr/share/foreman/app/controllers/templates_controller.rb:15:in `index'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/abstract_controller/base.rb:195:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal/rendering.rb:30:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/abstract_controller/callbacks.rb:42:in `block in process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:112:in `block in run_callbacks'
bf57cef4 | /usr/share/foreman/app/controllers/concerns/foreman/controller/timezone.rb:10:in `set_timezone'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:121:in `block in run_callbacks'
bf57cef4 | /usr/share/foreman/app/models/concerns/foreman/thread_session.rb:32:in `clear_thread'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:121:in `block in run_callbacks'
bf57cef4 | /usr/share/foreman/app/controllers/concerns/foreman/controller/topbar_sweeper.rb:12:in `set_topbar_sweeper_controller'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:121:in `block in run_callbacks'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/audited-4.10.0/lib/audited/sweeper.rb:14:in `around'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:121:in `block in run_callbacks'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/audited-4.10.0/lib/audited/sweeper.rb:14:in `around'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:121:in `block in run_callbacks'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:139:in `run_callbacks'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/abstract_controller/callbacks.rb:41:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal/rescue.rb:22:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal/instrumentation.rb:33:in `block in process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/notifications.rb:180:in `block in instrument'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/notifications.rb:180:in `instrument'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal/instrumentation.rb:32:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activerecord-6.0.3.7/lib/active_record/railties/controller_runtime.rb:27:in `process_action'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/abstract_controller/base.rb:136:in `process'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionview-6.0.3.7/lib/action_view/rendering.rb:39:in `process'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal.rb:190:in `dispatch'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_controller/metal.rb:254:in `dispatch'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/routing/route_set.rb:33:in `serve'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/journey/router.rb:49:in `block in serve'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/journey/router.rb:32:in `each'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/journey/router.rb:32:in `serve'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/routing/route_set.rb:834:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/apipie-dsl-2.4.0/lib/apipie_dsl/static_dispatcher.rb:67:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/apipie-rails-0.5.19/lib/apipie/static_dispatcher.rb:66:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/apipie-rails-0.5.19/lib/apipie/extractor/recorder.rb:137:in `call'
bf57cef4 | /usr/share/foreman/lib/foreman/middleware/telemetry.rb:10:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/apipie-rails-0.5.19/lib/apipie/middleware/checksum_in_headers.rb:27:in `call'
bf57cef4 | /usr/share/foreman/lib/foreman/middleware/catch_json_parse_errors.rb:9:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/tempfile_reaper.rb:15:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/etag.rb:27:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/conditional_get.rb:27:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/head.rb:12:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/http/content_security_policy.rb:18:in `call'
bf57cef4 | /usr/share/foreman/lib/foreman/middleware/logging_context_session.rb:22:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:266:in `context'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:260:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/cookies.rb:648:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/callbacks.rb:101:in `run_callbacks'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/callbacks.rb:26:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/actionable_exceptions.rb:18:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/railties-6.0.3.7/lib/rails/rack/logger.rb:37:in `call_app'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/railties-6.0.3.7/lib/rails/rack/logger.rb:28:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/sprockets-rails-3.2.2/lib/sprockets/rails/quiet_assets.rb:13:in `call'
bf57cef4 | /usr/share/foreman/lib/foreman/middleware/logging_context_request.rb:11:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/request_id.rb:27:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/method_override.rb:24:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/runtime.rb:22:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/activesupport-6.0.3.7/lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/executor.rb:14:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/static.rb:126:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/sendfile.rb:110:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/actionpack-6.0.3.7/lib/action_dispatch/middleware/host_authorization.rb:76:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/secure_headers-6.3.2/lib/secure_headers/middleware.rb:11:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/railties-6.0.3.7/lib/rails/engine.rb:527:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/railties-6.0.3.7/lib/rails/railtie.rb:190:in `public_send'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/railties-6.0.3.7/lib/rails/railtie.rb:190:in `method_missing'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/urlmap.rb:74:in `block in call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/urlmap.rb:58:in `each'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/rack-2.2.3/lib/rack/urlmap.rb:58:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/puma-5.4.0/lib/puma/configuration.rb:249:in `call'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/puma-5.4.0/lib/puma/request.rb:77:in `block in handle_request'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/puma-5.4.0/lib/puma/thread_pool.rb:340:in `with_force_shutdown'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/puma-5.4.0/lib/puma/request.rb:76:in `handle_request'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/puma-5.4.0/lib/puma/server.rb:440:in `process_client'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/puma-5.4.0/lib/puma/thread_pool.rb:147:in `block in spawn_thread'
bf57cef4 | /usr/share/foreman/vendor/ruby/2.7.0/gems/logging-2.3.0/lib/logging/diagnostic_context.rb:474:in `block in create_with_logging_context'
2021-08-24T08:02:21 [I|app|bf57cef4] Rendering common/500.html.erb within layouts/application
2021-08-24T08:02:21 [I|app|bf57cef4] Rendered common/500.html.erb within layouts/application (Duration: 1.5ms | Allocations: 687)
2021-08-24T08:02:21 [I|app|bf57cef4] Rendered layouts/_application_content.html.erb (Duration: 0.1ms | Allocations: 33)
2021-08-24T08:02:21 [I|app|bf57cef4] Rendering layouts/base.html.erb
2021-08-24T08:02:21 [I|app|bf57cef4] Rendered layouts/base.html.erb (Duration: 3.3ms | Allocations: 1280)
2021-08-24T08:02:21 [I|app|bf57cef4] Completed 500 Internal Server Error in 45ms (Views: 8.2ms | ActiveRecord: 2.1ms | Allocations: 17855)

Foreman version: 3.0.0-rc1
Plugins:
- foreman_puppet 1.0.0.rc.1