# Unable to move topic OP into another existing topic **URL:** https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264 **Category:** Bug **Created:** [June 28, 2017, 11:57am UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264 "2017-06-28T11:57:17Z") **Posts on this page:** 7 **Page:** 1
### Author: ![Freso](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/freso/32/49081_2.png) [@Freso](https://meta.discourse.org/u/Freso) #### Post date: [June 28, 2017, 11:57am UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/1 "2017-06-28T11:57:17Z")
I’m trying to move this topic: > **[Long-time lurker, first time Poster](https://community.metabrainz.org/t/long-time-lurker-first-time-poster/293688?u=freso)** > > Introducing myself here. I’ve been a music collector since my childhood and recently (two years ago) began cataloging my music on here and discogs. Recently I began chatting it up in the IRC channel. So, I have thousands of CD’s in my den... Into this topic: > **[Introduction thread!](https://community.metabrainz.org/t/introduction-thread/59?u=freso)** > > Hi, hello, how are you? Who are you? 😄 It is always much better to discuss things with someone if you know who they are, so go ahead and tell us. 🙂 Tell us about how you came to discover MusicBrainz, BookBrainz, or whatever \*Brainz project that... And I keep getting «There was an error moving posts into that topic.» which is not very helpful in determining why it won’t move it. Is there some kind of restriction in place to prevent moving topic OPs into other topics? Or what else might be in play here? In the log I see `NoMethodError (undefined method ``id' for nil:NilClass) /var/www/discourse/app/models/post_action.rb:317:in ``copy'` ('`'s changed to ‘``’ since you apparently can’t backslash escape them.): ```plaintext /var/www/discourse/app/models/post_action.rb:317:in `copy' /var/www/discourse/app/models/post_mover.rb:96:in `create_first_post' /var/www/discourse/app/models/post_mover.rb:77:in `block in move_each_post' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/relation/delegation.rb:46:in `each' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/relation/delegation.rb:46:in `each' /var/www/discourse/app/models/post_mover.rb:76:in `move_each_post' /var/www/discourse/app/models/post_mover.rb:46:in `move_posts_to' /var/www/discourse/app/models/post_mover.rb:18:in `block in to_topic' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/connection_adapters/abstract/transaction.rb:184:in `within_new_transaction' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/transactions.rb:220:in `transaction' /var/www/discourse/app/models/post_mover.rb:17:in `to_topic' /var/www/discourse/app/models/topic.rb:797:in `move_posts' /var/www/discourse/app/controllers/topics_controller.rb:518:in `merge_topic' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/implicit_render.rb:4:in `send_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/abstract_controller/base.rb:198:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/rendering.rb:10:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/abstract_controller/callbacks.rb:20:in `block in process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:117:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:92:in ` __run_callbacks__' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:778:in `_run_process_action_callbacks' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/abstract_controller/callbacks.rb:19:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/rescue.rb:29:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/notifications.rb:164:in `block in instrument' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/notifications/instrumenter.rb:20:in `instrument' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/notifications.rb:164:in `instrument' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/instrumentation.rb:30:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/params_wrapper.rb:250:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/railties/controller_runtime.rb:18:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/abstract_controller/base.rb:137:in `process' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionview-4.2.8/lib/action_view/rendering.rb:30:in `process' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-mini-profiler-0.10.5/lib/mini_profiler/profiling_methods.rb:76:in `block in profile_method' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal.rb:196:in `dispatch' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_controller/metal.rb:237:in `block in action' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb:74:in `dispatch' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb:43:in `serve' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb:43:in `block in serve' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb:30:in `each' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb:30:in `serve' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb:817:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-protection-1.5.3/lib/rack/protection/frame_options.rb:31:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:189:in `call!' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb:167:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/omniauth-1.6.1/lib/omniauth/builder.rb:63:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/conditionalget.rb:38:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/head.rb:13:in `call' /var/www/discourse/lib/middleware/anonymous_cache.rb:138:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/params_parser.rb:27:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/flash.rb:260:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/session/abstract/id.rb:225:in `context' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/session/abstract/id.rb:220:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/cookies.rb:560:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/query_cache.rb:36:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activerecord-4.2.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:88:in ` __run_callbacks__' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:778:in `_run_call_callbacks' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/callbacks.rb:27:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/remote_ip.rb:78:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/logster-1.2.7/lib/logster/middleware/reporter.rb:31:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/railties-4.2.8/lib/rails/rack/logger.rb:38:in `call_app' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/railties-4.2.8/lib/rails/rack/logger.rb:22:in `call' /var/www/discourse/config/initializers/100-quiet_logger.rb:17:in `call_with_quiet_assets' /var/www/discourse/config/initializers/100-silence_logger.rb:29:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/request_id.rb:21:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/methodoverride.rb:22:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/runtime.rb:18:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/sendfile.rb:113:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-mini-profiler-0.10.5/lib/mini_profiler/profiler.rb:171:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/message_bus-2.0.2/lib/message_bus/rack/middleware.rb:62:in `call' /var/www/discourse/lib/middleware/request_tracker.rb:73:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/railties-4.2.8/lib/rails/engine.rb:518:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/railties-4.2.8/lib/rails/application.rb:165:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/railties-4.2.8/lib/rails/railtie.rb:194:in `public_send' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/railties-4.2.8/lib/rails/railtie.rb:194:in `method_missing' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/urlmap.rb:66:in `block in call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/urlmap.rb:50:in `each' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rack-1.6.8/lib/rack/urlmap.rb:50:in `call' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:606:in `process_client' /var/www/discourse/lib/scheduler/defer.rb:85:in `process_client' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:702:in `worker_loop' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:549:in `spawn_missing_workers' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:563:in `maintain_worker_count' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/unicorn-5.3.0/lib/unicorn/http_server.rb:293:in `join' /var/www/discourse/vendor/bundle/ruby/2.4.0/gems/unicorn-5.3.0/bin/unicorn:126:in `' /var/www/discourse/vendor/bundle/ruby/2.4.0/bin/unicorn:22:in `load' /var/www/discourse/vendor/bundle/ruby/2.4.0/bin/unicorn:22:in `
' ``` Which might be related? ---
### Author: ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam) #### Post date: [June 28, 2017, 9:40pm UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/2 "2017-06-28T21:40:06Z")
It looks like a bug, but it is very very hard to debug this without a repro. Are you able to reproduce the problem in a demo post? ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [June 28, 2017, 10:50pm UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/3 "2017-06-28T22:50:43Z")
Looks like first post has to be flagged to threshold, then merged to another topic. @techAPJ can you repro locally? ---
### Author: ![techAPJ](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/techapj/32/342990_2.png) [@techAPJ](https://meta.discourse.org/u/techAPJ) #### Post date: [July 3, 2017, 11:47am UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/4 "2017-07-03T11:47:23Z")
Yes, I can repro this issue. Working on a fix now. ---
### Author: ![techAPJ](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/techapj/32/342990_2.png) [@techAPJ](https://meta.discourse.org/u/techAPJ) #### Post date: [July 3, 2017, 4:43pm UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/6 "2017-07-03T16:43:04Z")
I was able to repro the exact same error when moving a first post to closed/archived topic and that is now fixed via: [https://github.com/discourse/discourse/commit/984778d3acb209297e37681137c0d8d5131e83ec](https://github.com/discourse/discourse/commit/984778d3acb209297e37681137c0d8d5131e83ec) @Freso I see that the destination topic in your case was not closed/archived, but can you please try updating your instance to latest version and see if the issue is fixed for you? ---
### Author: ![Freso](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/freso/32/49081_2.png) [@Freso](https://meta.discourse.org/u/Freso) #### Post date: [July 3, 2017, 9:09pm UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/7 "2017-07-03T21:09:52Z")
Yes, it worked now: > **[Introduction thread!](https://community.metabrainz.org/t/introduction-thread/59/65?u=freso)** > > Introducing myself here. I’ve been a music collector since my childhood and recently (two years ago) began cataloging my music on here and discogs. Recently I began chatting it up in the IRC channel. So, I have thousands of CD’s in my den... Thanks a bunch! 🙌 ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [July 3, 2017, 9:37pm UTC](https://meta.discourse.org/t/unable-to-move-topic-op-into-another-existing-topic/65264/8 "2017-07-03T21:37:06Z")