음, Discourse를 3.4.0 버전으로 재설치했습니다:
하지만 프로덕션 모드로 실행하지는 못했습니다. 왜 그런지 정확히 모르겠어요. 그냥 "Oops …"라고만 표시되고, 로그에서도 딱히 확인되는 것이 없었습니다. 프록시 설정과 관련된 문제인 것 같기도 하지만 확신은 없습니다.
어쨌든 RAILS_ENV를 "development"로 되돌리니 실행은 시작되었습니다. 하지만 WordPress에서 연결을 시도할 때 여전히 같은 오류가 발생합니다:
[2025-02-21 22:11:06] connection.INFO: check_connection_status.failed_to_connect {"error":"wpdc_response_error","message":"An invalid response was returned from Discourse","http_code":"","http_body":""}
Discourse로 쿼리가 도달하는 것은 확인되는데, 왜 작동하지 않는지 이해가 되지 않습니다.
GET "/site.json" for 000.123.456.789 at 2025-02-21 16:11:05 -0600
10:11 pm
Processing by SiteController#site as JSON
10:11 pm
ApiKey Load (9.0ms) SELECT "api_keys".* FROM "api_keys" WHERE (revoked_at IS NULL) AND "api_keys"."key_hash" = '3f27a89fedae42123b9ad596fae6c06d36748f53bd241213941083af49cf5e46' ORDER BY "api_keys"
10:11 pm
ApiKeyScope Load (10.6ms) SELECT "api_key_scopes".* FROM "api_key_scopes" WHERE "api_key_scopes"."api_key_id" = 1
10:11 pm
User Load (8.1ms) SELECT "users"."id", "users"."username", "users"."created_at", "users"."updated_at", "users"."name", "users"."last_posted_at", "users"."active", "users"."username_lower", "users".
10:11 pm
UserOption Load (6.1ms) SELECT "user_options"."user_id", "user_options"."mailing_list_mode", "user_options"."email_digests", "user_options"."external_links_in_new_tab", "user_options"."enable_quoti
10:11 pm
Group Load (8.6ms) SELECT "groups"."id", "groups"."name", "groups"."flair_icon", "groups"."flair_upload_id", "groups"."flair_bg_color", "groups"."flair_color" FROM "groups" ORDER BY groups.name ASC
10:11 pm
(7.0ms) SELECT "categories"."id" FROM "categories" WHERE "categories"."read_restricted" = FALSE
10:11 pm
(10.7ms) SELECT "categories"."id" FROM "categories" WHERE "categories"."read_restricted" = TRUE
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Topic Count (4.1ms) SELECT COUNT(*) FROM (SELECT 1 AS one FROM "topics" WHERE "topics"."deleted_at" IS NULL LIMIT 16) subquery_for_count
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(6.1ms) SELECT "users"."id" FROM "users" INNER JOIN "user_auth_tokens" ON "user_auth_tokens"."user_id" = "users"."id" WHERE "users"."admin" = TRUE AND (users.id > 0) ORDER BY user_auth_tokens.crea
10:11 pm
(8.5ms) SELECT "categories"."id" FROM "categories" WHERE "categories"."topic_featured_link_allowed" = TRUE
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ColorScheme Load (6.8ms) SELECT "color_schemes".* FROM "color_schemes" WHERE (color_schemes.id NOT IN (SELECT color_scheme_id FROM theme_color_schemes)) AND "color_schemes"."id" = 1 LIMIT 1
10:11 pm
ColorSchemeColor Load (7.8ms) SELECT "color_scheme_colors".* FROM "color_scheme_colors" WHERE "color_scheme_colors"."color_scheme_id" = 1 ORDER BY id ASC
10:11 pm
(6.0ms) SELECT "group_users"."group_id" FROM "group_users" WHERE "group_users"."user_id" = -1
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(8.0ms) SELECT "category_users"."category_id", "category_users"."notification_level" FROM "category_users" WHERE "category_users"."user_id" = -1
10:11 pm
UserField Load (9.5ms) SELECT "user_fields"."id", "user_fields"."name", "user_fields"."created_at", "user_fields"."updated_at", "user_fields"."editable", "user_fields"."description", "user_fields".
10:11 pm
Completed 200 OK in 256ms (Views: 0.3ms | ActiveRecord: 116.4ms (15 queries, 0 cached) | GC: 94.6ms)
일단 이 문제로 좀 쉬어볼 생각이지만, 무엇이 잘못되었을지 아이디어가 있으시다면 몇 가지 힌트를 주시면 감사하겠습니다. 
