ActivityPub Plugin

I tried to install this plugin and always get this warn in /logs:

[Discourse Activity Pub] https://futarino.online/ap/actor/a3838865a250342cf09f7907b653b9d1 failed to schedule https://futarino.online/ap/activity/2628ea98d33a52fd2412f9d59541bb91 for delivery: no recipients

backtrace:

/var/www/discourse/plugins/discourse-activity-pub/lib/discourse_activity_pub/delivery_handler.rb:73:in `log_failure' 
/var/www/discourse/plugins/discourse-activity-pub/lib/discourse_activity_pub/delivery_handler.rb:31:in `can_deliver?' 
/var/www/discourse/plugins/discourse-activity-pub/lib/discourse_activity_pub/delivery_handler.rb:16:in `perform' 
/var/www/discourse/plugins/discourse-activity-pub/lib/discourse_activity_pub/delivery_handler.rb:23:in `perform' 
/var/www/discourse/plugins/discourse-activity-pub/app/models/concerns/discourse_activity_pub/ap/model_callbacks.rb:143:in `activity_pub_deliver_activity' 
/var/www/discourse/plugins/discourse-activity-pub/app/models/concerns/discourse_activity_pub/ap/model_callbacks.rb:33:in `perform_activity_pub_activity' 
/var/www/discourse/plugins/discourse-activity-pub/plugin.rb:494:in `block (2 levels) in activate!' 
/var/www/discourse/lib/plugin/instance.rb:316:in `public_send' 
/var/www/discourse/lib/plugin/instance.rb:316:in `block (2 levels) in add_to_class' 
/var/www/discourse/plugins/discourse-activity-pub/plugin.rb:502:in `block (2 levels) in activate!' 
/var/www/discourse/lib/plugin/instance.rb:316:in `public_send' 
/var/www/discourse/lib/plugin/instance.rb:316:in `block (2 levels) in add_to_class' 
/var/www/discourse/plugins/discourse-activity-pub/app/controllers/discourse_activity_pub/post_controller.rb:13:in `schedule' 
actionpack-7.0.7/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action' 
actionpack-7.0.7/lib/abstract_controller/base.rb:215:in `process_action' 
actionpack-7.0.7/lib/action_controller/metal/rendering.rb:165:in `process_action' 
actionpack-7.0.7/lib/abstract_controller/callbacks.rb:234:in `block in process_action' 
activesupport-7.0.7/lib/active_support/callbacks.rb:118:in `block in run_callbacks' 
/var/www/discourse/app/controllers/application_controller.rb:421:in `block in with_resolved_locale' 
i18n-1.14.1/lib/i18n.rb:322:in `with_locale' 
/var/www/discourse/app/controllers/application_controller.rb:421:in `with_resolved_locale' 
activesupport-7.0.7/lib/active_support/callbacks.rb:127:in `block in run_callbacks' 
activesupport-7.0.7/lib/active_support/callbacks.rb:138:in `run_callbacks' 
actionpack-7.0.7/lib/abstract_controller/callbacks.rb:233:in `process_action' 
actionpack-7.0.7/lib/action_controller/metal/rescue.rb:23:in `process_action' 
actionpack-7.0.7/lib/action_controller/metal/instrumentation.rb:67:in `block in process_action' 
activesupport-7.0.7/lib/active_support/notifications.rb:206:in `block in instrument' 
activesupport-7.0.7/lib/active_support/notifications/instrumenter.rb:24:in `instrument' 
activesupport-7.0.7/lib/active_support/notifications.rb:206:in `instrument' 
actionpack-7.0.7/lib/action_controller/metal/instrumentation.rb:66:in `process_action' 
actionpack-7.0.7/lib/action_controller/metal/params_wrapper.rb:259:in `process_action' 
activerecord-7.0.7/lib/active_record/railties/controller_runtime.rb:27:in `process_action' 
actionpack-7.0.7/lib/abstract_controller/base.rb:151:in `process' 
actionview-7.0.7/lib/action_view/rendering.rb:39:in `process' 
rack-mini-profiler-3.1.1/lib/mini_profiler/profiling_methods.rb:111:in `block in profile_method' 
actionpack-7.0.7/lib/action_controller/metal.rb:188:in `dispatch' 
actionpack-7.0.7/lib/action_controller/metal.rb:251:in `dispatch' 
actionpack-7.0.7/lib/action_dispatch/routing/route_set.rb:49:in `dispatch' 
actionpack-7.0.7/lib/action_dispatch/routing/route_set.rb:32:in `serve' 
actionpack-7.0.7/lib/action_dispatch/journey/router.rb:50:in `block in serve' 
actionpack-7.0.7/lib/action_dispatch/journey/router.rb:32:in `each' 
actionpack-7.0.7/lib/action_dispatch/journey/router.rb:32:in `serve' 
actionpack-7.0.7/lib/action_dispatch/routing/route_set.rb:852:in `call' 
railties-7.0.7/lib/rails/engine.rb:530:in `call' 
railties-7.0.7/lib/rails/railtie.rb:226:in `public_send' 
railties-7.0.7/lib/rails/railtie.rb:226:in `method_missing' 
actionpack-7.0.7/lib/action_dispatch/routing/mapper.rb:19:in `block in <class:Constraints>' 
actionpack-7.0.7/lib/action_dispatch/routing/mapper.rb:48:in `serve' 
actionpack-7.0.7/lib/action_dispatch/journey/router.rb:50:in `block in serve' 
actionpack-7.0.7/lib/action_dispatch/journey/router.rb:32:in `each' 
actionpack-7.0.7/lib/action_dispatch/journey/router.rb:32:in `serve' 
actionpack-7.0.7/lib/action_dispatch/routing/route_set.rb:852:in `call' 
/var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:74:in `call' 
rack-2.2.8/lib/rack/tempfile_reaper.rb:15:in `call' 
rack-2.2.8/lib/rack/conditional_get.rb:40:in `call' 
rack-2.2.8/lib/rack/head.rb:12:in `call' 
actionpack-7.0.7/lib/action_dispatch/http/permissions_policy.rb:38:in `call' 
/var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call' 
/var/www/discourse/lib/middleware/anonymous_cache.rb:389:in `call' 
/var/www/discourse/lib/middleware/gtm_script_nonce_injector.rb:10:in `call' 
rack-2.2.8/lib/rack/session/abstract/id.rb:266:in `context' 
rack-2.2.8/lib/rack/session/abstract/id.rb:260:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/cookies.rb:704:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call' 
activesupport-7.0.7/lib/active_support/callbacks.rb:99:in `run_callbacks' 
actionpack-7.0.7/lib/action_dispatch/middleware/callbacks.rb:26:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/debug_exceptions.rb:28:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/show_exceptions.rb:29:in `call' 
logster-2.13.0/lib/logster/middleware/reporter.rb:40:in `call' 
railties-7.0.7/lib/rails/rack/logger.rb:40:in `call_app' 
railties-7.0.7/lib/rails/rack/logger.rb:27:in `call' 
/var/www/discourse/config/initializers/100-quiet_logger.rb:20:in `call' 
/var/www/discourse/config/initializers/100-silence_logger.rb:29:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/remote_ip.rb:93:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/request_id.rb:26:in `call' 
/var/www/discourse/lib/middleware/enforce_hostname.rb:24:in `call' 
rack-2.2.8/lib/rack/method_override.rb:24:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/executor.rb:14:in `call' 
rack-2.2.8/lib/rack/sendfile.rb:110:in `call' 
actionpack-7.0.7/lib/action_dispatch/middleware/host_authorization.rb:131:in `call' 
rack-mini-profiler-3.1.1/lib/mini_profiler.rb:413:in `call' 
message_bus-4.3.8/lib/message_bus/rack/middleware.rb:60:in `call' 
/var/www/discourse/lib/middleware/request_tracker.rb:233:in `call' 
railties-7.0.7/lib/rails/engine.rb:530:in `call' 
railties-7.0.7/lib/rails/railtie.rb:226:in `public_send' 
railties-7.0.7/lib/rails/railtie.rb:226:in `method_missing' 
rack-2.2.8/lib/rack/urlmap.rb:74:in `block in call' 
rack-2.2.8/lib/rack/urlmap.rb:58:in `each' 
rack-2.2.8/lib/rack/urlmap.rb:58:in `call' 
unicorn-6.1.0/lib/unicorn/http_server.rb:634:in `process_client'
unicorn-6.1.0/lib/unicorn/http_server.rb:739:in `worker_loop'
unicorn-6.1.0/lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
unicorn-6.1.0/lib/unicorn/http_server.rb:143:in `start'
unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/3.2.0/bin/unicorn:25:in `load' 
/var/www/discourse/vendor/bundle/ruby/3.2.0/bin/unicorn:25:in `<main>' 

Also, I cannot find the account I set up, on Mastodon.

Is there any solution to this?