{"id":185,"date":"2020-05-11T15:26:00","date_gmt":"2020-05-11T13:26:00","guid":{"rendered":"https:\/\/camilomatajira.wordpress.com\/?p=185"},"modified":"2025-06-10T18:35:43","modified_gmt":"2025-06-10T18:35:43","slug":"celery-received-and-deleted-unknown-message-wrong-destination","status":"publish","type":"post","link":"https:\/\/camilo.matajira.com\/?p=185","title":{"rendered":"Celery — Received and deleted unknown message. Wrong destination?!?"},"content":{"rendered":"

Root cause:<\/strong> in my case it was a discrepancy between the client (who pushes tasks) and the worker ( who received the tasks). In my case the client was an Ubuntu server with Python 3.8, while the client was Debian 9, with Python 3.5.<\/p>\n

How to solve:<\/strong> standardize client and worker. I put my client to be also Debian 9 with Python 3.5.<\/p>\n

Initial problem message:<\/strong><\/p>\n

worker1 | [2020-05-11 13:10:54,366: WARNING\/MainProcess] Received and deleted unknown message. Wrong destination?!?
\nworker1 |
\nworker1 | The full contents of the message body was: body: [[4, 4], {}, {‘callbacks’: None, ‘chord’: None, ‘errbacks’: None, ‘chain’: None}] (81b)
\nworker1 | {content_type:’application\/json’ content_encoding:’utf-8′
\nworker1 | delivery_info:{‘routing_key’: ‘celery’, ‘redelivered’: False, ‘delivery_tag’: 1, ‘exchange’: ”, ‘consumer_tag’: ‘None2’} headers={‘expires’: None, ‘origin’: ‘gen101022@lenovo’, ‘retries’:
\n0, ‘shadow’: None, ‘root_id’: ‘3ad250be-952c-4dcc-ac3c-31245d83f216’, ‘eta’: None, ‘group’: None, ‘parent_id’: None, ‘task’: ‘tasks.add’, ‘lang’: ‘py’, ‘id’: ‘3ad250be-952c-4dcc-ac3c-31245d83f216’, ‘timeli
\nmit’: [None, None], ‘kwargsrepr’: ‘{}’, ‘argsrepr’: ‘(4, 4)’}}<\/p>\n","protected":false},"excerpt":{"rendered":"

Root cause: in my case it was a discrepancy between the client (who pushes tasks) and the worker ( who received the tasks). In my case the client was an Ubuntu server with Python 3.8, while the client was Debian 9, with Python 3.5. How to solve: standardize client and worker. I put my client…<\/p>\n","protected":false},"author":2,"featured_media":207,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[20,26,55],"class_list":["post-185","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-debugging","tag-celery","tag-debugging","tag-python"],"_links":{"self":[{"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/posts\/185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=185"}],"version-history":[{"count":1,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/posts\/185\/revisions"}],"predecessor-version":[{"id":534,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/posts\/185\/revisions\/534"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=\/wp\/v2\/media\/207"}],"wp:attachment":[{"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/camilo.matajira.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}