PG::UnableToSend: сервер неожиданно закрыл соединение

Running v2.4.0.beta1 +29

/var/www/discourse# rake uploads:recover_from_tombstone --trace

** Invoke uploads:recover_from_tombstone (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute uploads:recover_from_tombstone
** Invoke uploads:recover (first_time)
** Invoke environment
** Execute uploads:recover
rake aborted!
ActiveRecord::StatementInvalid: PG::UnableToSend: server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.
: SELECT  "uploads".* FROM "uploads" WHERE "uploads"."sha1" = '25448339cd2057cd70b9b28ae64a1019bff12b34' LIMIT 1
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/patches/db/pg.rb:69:in `async_exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/patches/db/pg.rb:69:in `exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:611:in `block (2 levels) in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:48:in `block in permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/concurrency/share_lock.rb:187:in `yield_shares'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:47:in `permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:610:in `block in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:581:in `block (2 levels) in log'
/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:580:in `block in log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications/instrumenter.rb:23:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:571:in `log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:609:in `exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:596:in `execute_and_clear'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql/database_statements.rb:81:in `exec_query'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:478:in `select'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:70:in `select_all'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/query_cache.rb:106:in `select_all'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/querying.rb:41:in `find_by_sql'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/statement_cache.rb:108:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/core.rb:208:in `find_by'
/var/www/discourse/lib/upload_creator.rb:70:in `block in create_for'
/var/www/discourse/lib/distributed_mutex.rb:42:in `synchronize'
/var/www/discourse/lib/distributed_mutex.rb:12:in `synchronize'
/var/www/discourse/lib/upload_creator.rb:37:in `create_for'
/var/www/discourse/lib/upload_recovery.rb:178:in `create_upload'
/var/www/discourse/lib/upload_recovery.rb:124:in `block in recover_from_local'
/var/www/discourse/lib/upload_recovery.rb:117:in `each'
/var/www/discourse/lib/upload_recovery.rb:117:in `recover_from_local'
/var/www/discourse/lib/upload_recovery.rb:84:in `recover_post_upload_from_local'
/var/www/discourse/lib/upload_recovery.rb:62:in `recover_post_upload'
/var/www/discourse/lib/upload_recovery.rb:25:in `block (2 levels) in recover'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/nokogiri-1.10.3/lib/nokogiri/xml/node_set.rb:238:in `block in each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/nokogiri-1.10.3/lib/nokogiri/xml/node_set.rb:237:in `upto'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/nokogiri-1.10.3/lib/nokogiri/xml/node_set.rb:237:in `each'
/var/www/discourse/lib/upload_recovery.rb:14:in `block in recover'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:70:in `block (2 levels) in find_each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:70:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:70:in `block in find_each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:136:in `block in find_in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:238:in `block in in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:222:in `loop'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:222:in `in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:135:in `find_in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:69:in `find_each'
/var/www/discourse/lib/upload_recovery.rb:9:in `recover'
/var/www/discourse/lib/tasks/uploads.rake:906:in `block (2 levels) in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rails_multisite-2.0.7/lib/rails_multisite/connection_management.rb:63:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rails_multisite-2.0.7/lib/rails_multisite/connection_management.rb:73:in `each_connection'
/var/www/discourse/lib/tasks/uploads.rake:905:in `block in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:214:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:194:in `invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:183:in `invoke'
/var/www/discourse/lib/tasks/uploads.rake:894:in `block in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:214:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:194:in `invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:183:in `invoke'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:160:in `invoke_task'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `block (2 levels) in top_level'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `block in top_level'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:125:in `run_with_threads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:110:in `top_level'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:83:in `block in run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:186:in `standard_exception_handling'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:80:in `run'
bin/rake:13:in `<top (required)>'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:74:in `load'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:74:in `kernel_load'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:28:in `run'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:463:in `exec'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:27:in `dispatch'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:18:in `start'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-1.17.2/exe/bundle:30:in `block in <top (required)>'
/usr/local/lib/ruby/2.6.0/bundler/friendly_errors.rb:124:in `with_friendly_errors'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-1.17.2/exe/bundle:22:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'

Caused by:
PG::UnableToSend: server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/patches/db/pg.rb:69:in `async_exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/patches/db/pg.rb:69:in `exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:611:in `block (2 levels) in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:48:in `block in permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/concurrency/share_lock.rb:187:in `yield_shares'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:47:in `permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:610:in `block in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:581:in `block (2 levels) in log'
/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:580:in `block in log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications/instrumenter.rb:23:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:571:in `log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:609:in `exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:596:in `execute_and_clear'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/postgresql/database_statements.rb:81:in `exec_query'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:478:in `select'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:70:in `select_all'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/query_cache.rb:106:in `select_all'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/querying.rb:41:in `find_by_sql'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/statement_cache.rb:108:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/core.rb:208:in `find_by'
/var/www/discourse/lib/upload_creator.rb:70:in `block in create_for'
/var/www/discourse/lib/distributed_mutex.rb:42:in `synchronize'
/var/www/discourse/lib/distributed_mutex.rb:12:in `synchronize'
/var/www/discourse/lib/upload_creator.rb:37:in `create_for'
/var/www/discourse/lib/upload_recovery.rb:178:in `create_upload'
/var/www/discourse/lib/upload_recovery.rb:124:in `block in recover_from_local'
/var/www/discourse/lib/upload_recovery.rb:117:in `each'
/var/www/discourse/lib/upload_recovery.rb:117:in `recover_from_local'
/var/www/discourse/lib/upload_recovery.rb:84:in `recover_post_upload_from_local'
/var/www/discourse/lib/upload_recovery.rb:62:in `recover_post_upload'
/var/www/discourse/lib/upload_recovery.rb:25:in `block (2 levels) in recover'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/nokogiri-1.10.3/lib/nokogiri/xml/node_set.rb:238:in `block in each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/nokogiri-1.10.3/lib/nokogiri/xml/node_set.rb:237:in `upto'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/nokogiri-1.10.3/lib/nokogiri/xml/node_set.rb:237:in `each'
/var/www/discourse/lib/upload_recovery.rb:14:in `block in recover'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:70:in `block (2 levels) in find_each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:70:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:70:in `block in find_each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:136:in `block in find_in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:238:in `block in in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:222:in `loop'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:222:in `in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:135:in `find_in_batches'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/relation/batches.rb:69:in `find_each'
/var/www/discourse/lib/upload_recovery.rb:9:in `recover'
/var/www/discourse/lib/tasks/uploads.rake:906:in `block (2 levels) in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rails_multisite-2.0.7/lib/rails_multisite/connection_management.rb:63:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rails_multisite-2.0.7/lib/rails_multisite/connection_management.rb:73:in `each_connection'
/var/www/discourse/lib/tasks/uploads.rake:905:in `block in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:214:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:194:in `invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:183:in `invoke'
/var/www/discourse/lib/tasks/uploads.rake:894:in `block in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:214:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:194:in `invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:183:in `invoke'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:160:in `invoke_task'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `block (2 levels) in top_level'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `block in top_level'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:125:in `run_with_threads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:110:in `top_level'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:83:in `block in run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:186:in `standard_exception_handling'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/lib/rake/application.rb:80:in `run'
bin/rake:13:in `<top (required)>'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:74:in `load'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:74:in `kernel_load'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:28:in `run'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:463:in `exec'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:27:in `dispatch'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:18:in `start'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-1.17.2/exe/bundle:30:in `block in <top (required)>'
/usr/local/lib/ruby/2.6.0/bundler/friendly_errors.rb:124:in `with_friendly_errors'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-1.17.2/exe/bundle:22:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Tasks: TOP => uploads:recover

Вы пробовали это сделать более одного раза и получали одну и ту же ошибку в одном и том же месте?

Отличный вопрос, @pfaffman.

Та же ошибка, но падение происходит в другом месте.

ActiveRecord::StatementInvalid: PG::ConnectionBad: PQconsumeInput() сервер неожиданно закрыл соединение
	Скорее всего, это означает, что сервер аварийно завершил работу
	до или во время обработки запроса.
: SELECT  "user_uploads".* FROM "user_uploads" WHERE "user_uploads"."user_id" = 1221 AND "user_uploads"."upload_id" = 28216 LIMIT 1

Как вы установили Discourse?

Это не сбой как таковой:

Отключение базы данных PostgreSQL — это не то, с чем мы обычно сталкиваемся.

Как вы выполнили установку? Чем ваша конфигурация отличается от стандартной или содержит ли она какие-либо кастомные настройки?

Совершенно стандартная установка в облаке.
Вот вывод утилиты discourse-doctor.

DISCOURSE DOCTOR Пт, 28 июня 2019 г., 02:00:11 UTC
ОС: Linux community.example.org 4.4.0-151-generic #178-Ubuntu SMP Вт, 11 июня 2019 г., 08:30:22 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux


Найден файл containers/app.yml

==================== НАСТРОЙКИ YML ====================
DISCOURSE_HOSTNAME=community.example.org
SMTP_ADDRESS=smtp.mailgun.org
DEVELOPER_EMAILS=СКРЫТО 
SMTP_PASSWORD=СКРЫТО 
SMTP_PORT=587
SMTP_USER_NAME=postmaster@community.example.org
LETSENCRYPT_ACCOUNT_EMAIL=СКРЫТО 

==================== ИНФОРМАЦИЯ О DOCKER ====================
ВЕРСИЯ DOCKER: Docker version 18.09.6, сборка 481bc77

ПРОЦЕССЫ DOCKER (docker ps -a)

CONTAINER ID        IMAGE                           COMMAND             CREATED             STATUS              PORTS                                      NAMES
c8d61fb69150        local_discourse/app             "/sbin/boot"        2 месяца назад        Запущен около минуты назад   0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp   app
612da87d4e61        local_discourse/mail-receiver   "/sbin/boot"        14 месяцев назад       Запущен около минуты назад   0.0.0.0:25->25/tcp                         mail-receiver


Контейнер Discourse app запущен


==================== ПЛАГИНЫ ====================
          - git clone https://github.com/discourse/docker_manager.git
          - git clone https://github.com/angusmcleod/discourse-legal-tools.git
          - git clone https://github.com/angusmcleod/discourse-custom-wizard.git
          - git clone https://github.com/discourse/discourse-solved.git

ПРЕДУПРЕЖДЕНИЕ:
Кажется, у вас установлены неофициальные плагины.
Если у вас возникают проблемы, отключите их и попробуйте пересобрать систему заново.

См. официальный список здесь: https://github.com/discourse/discourse/blob/master/lib/plugin/metadata.rb

========================================
Версия Discourse на community.example.org: Discourse 2.4.0.beta1 
Версия Discourse на localhost: Discourse 2.4.0.beta1 


==================== ИНФОРМАЦИЯ О ПАМЯТИ ====================
ОС: Linux
ОЗУ (МБ): 4046

              total        used        free      shared  buff/cache   available
Mem:           3951        1226        1359          64        1364        2356
Swap:             0           0           0

==================== ПРОВЕРКА СВОБОДНОГО МЕСТА НА ДИСКЕ ====================
---------- Свободное место на диске ОС ----------
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        60G   14G   43G  24% /

---------- Свободное место на диске контейнера ----------
Filesystem      Size  Used Avail Use% Mounted on
overlay          60G   14G   43G  24% /
/dev/vda1        60G   14G   43G  24% /shared
/dev/vda1        60G   14G   43G  24% /var/log

==================== ИНФОРМАЦИЯ О ДИСКЕ ====================
Диск /dev/vda: 60 ГиБ, 64424509440 байт, 125829120 секторов
Единицы измерения: сектора по 1 * 512 = 512 байт
Размер сектора (логический/физический): 512 байт / 512 байт
Размер I/O (минимальный/оптимальный): 512 байт / 512 байт
Тип метки диска: dos
Идентификатор диска: 0xc4c394c3

Device     Boot Start       End   Sectors Size Id Type
/dev/vda1  *     2048 125829086 125827039  60G 83 Linux

==================== КОНЕЦ ИНФОРМАЦИИ О ДИСКЕ ====================

==================== ТЕСТ ПИСЕМ ====================
Для надежного теста получите адрес на http://www.mail-tester.com/
Тест почты пропущен.

==================== ГОТОВО! ====================

Перезагрузка, похоже, решила проблему. Спасибо всем за подсказки!