Why does my deploy logs not include any error but the deployment status is "Deploy Error: Container Terminated"?

I deployed my Ruby app and got the error

Deploy Error: Container Terminated

But I could not find any errors from the logs (below). My questions are:

• How can I fix this error and deploy successfully?
• How can I troubleshoot if this happens in the future?

Here are the actions I have tried to fix this but they did not work:

• Force rebuild and deploy
• Add another Log Forwarding and use doctl to try to find if there are any more detail logs

Before this issue, my app was deployed successfully several times and I did not change any configs

Below are the deploy logs

[2024-05-07 11:12:59] => Booting Puma
[2024-05-07 11:12:59] => Rails 7.0.8.1 application starting in production 
[2024-05-07 11:12:59] => Run `bin/rails server --help` for more startup options
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.945654 #1]  INFO -- : Sidekiq 7.1.4 connecting to Redis with options {:size=>10, :pool_name=>"internal", :url=>"redis://default:REDACTED@159.203.99.32:6379/10"}
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.955913 #1]  INFO -- : SidekiqScheduler is disabled
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.956054 #1]  INFO -- : Running in ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-linux]
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.956077 #1]  INFO -- : See LICENSE and the LGPL-3.0 for licensing details.
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.956089 #1]  INFO -- : Upgrade to Sidekiq Pro for more features and support: https://sidekiq.org
[2024-05-07 11:13:01] D, [2024-05-07T11:13:01.958575 #1] DEBUG -- : Client Middleware: 
[2024-05-07 11:13:01] D, [2024-05-07T11:13:01.958811 #1] DEBUG -- : Server Middleware: Sidekiq::Metrics::Middleware
[2024-05-07 11:13:01] D, [2024-05-07T11:13:01.958842 #1] DEBUG -- : Firing startup event
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.965152 #1]  INFO -- : Loading Schedule
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.965234 #1]  INFO -- : Scheduling import_stocks {"cron"=>"0 0 * * *", "class"=>"FinancialData::ImportStockListWorker", "queue"=>"low", "description"=>"Importing stock list"}
[2024-05-07 11:13:01] I, [2024-05-07T11:13:01.971657 #1]  INFO -- : Schedules Loaded
[2024-05-07 11:13:01] D, [2024-05-07T11:13:01.972075 #1] DEBUG -- : {:labels=>#<Set: {}>, :require=>".", :environment=>nil, :concurrency=>5, :timeout=>25, :poll_interval_average=>nil, :average_scheduled_poll_interval=>5, :on_complex_arguments=>:raise, :error_handlers=>[#<Proc:0x00007ec1be81c398 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-7.1.4/lib/sidekiq/config.rb:37 (lambda)>], :death_handlers=>[], :lifecycle_events=>{:startup=>[], :quiet=>[#<Proc:0x00007ec1bdb31430 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-scheduler-5.0.3/lib/sidekiq-scheduler.rb:24>], :shutdown=>[], :heartbeat=>[], :beat=>[#<Proc:0x00007ec1bdb30800 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-7.1.4/lib/sidekiq/metrics/tracking.rb:133>]}, :dead_max_jobs=>10000, :dead_timeout_in_seconds=>15552000, :reloader=>#<Sidekiq::Rails::Reloader @app=XProjectCore::Application>, :backtrace_cleaner=>#<Proc:0x00007ec1bdb30eb8 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-7.1.4/lib/sidekiq/rails.rb:59 (lambda)>, :schedule_manager=>#<SidekiqScheduler::Manager:0x00007ec1bdb16ec8 @scheduler_instance=#<SidekiqScheduler::Scheduler:0x00007ec1bdb168d8 @scheduler_config=#<SidekiqScheduler::Config:0x00007ec1bdb17260 @sidekiq_config=#<Sidekiq::Config:0x00007ec1bf456280 @options={...}, @directory={}, @redis_config={:url=>"redis://default:08cfebeee790aa22fb277decaacb85568c93207d2d15b046e3cefc9cd90374d7@159.203.99.32:6379/10"}, @capsules={"default"=>#<Sidekiq::Capsule:0x00007ec1bdb31688 @name="default", @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @queues=["critical", "default", "mailers", "low"], @weights={"critical"=>0, "default"=>0, "mailers"=>0, "low"=>0}, @concurrency=2, @mode=:strict, @client_chain=#<Sidekiq::Middleware::Chain:0x00007ec1bdb182a0 @config=#<Sidekiq::Capsule:0x00007ec1bdb31688 ...>, @entries=[]>, @server_chain=#<Sidekiq::Middleware::Chain:0x00007ec1bdb17eb8 @config=#<Sidekiq::Capsule:0x00007ec1bdb31688 ...>, @entries=[#<Sidekiq::Middleware::Entry:0x00007ec1bdb308a0 @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @klass=Sidekiq::Metrics::Middleware, @args=[#<Sidekiq::Metrics::ExecutionTracker:0x00007ec1bdb30cd8 @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @jobs={}, @totals={}, @grams={}, @lock=#<Thread::Mutex:0x00007ec1bdb30b20>>]>]>>}, @logger=#<Sidekiq::Logger:0x00007ec1bdb306e8 @level=0, @progname=nil, @default_formatter=#<Logger::Formatter:0x00007ec1bdb306c0 @datetime_format=nil>, @formatter=nil, @logdev=#<Logger::LogDevice:0x00007ec1bdb30670 @shift_period_suffix=nil, @shift_size=nil, @shift_age=nil, @filename=nil, @dev=#<IO:<STDOUT>>, @binmode=false, @mon_data=#<Monitor:0x00007ec1bdb30648>, @mon_data_owner_object_id=35340>>, @server_chain=#<Sidekiq::Middleware::Chain:0x00007ec1bdb30a80 @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @entries=[#<Sidekiq::Middleware::Entry:0x00007ec1bdb308a0 @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @klass=Sidekiq::Metrics::Middleware, @args=[#<Sidekiq::Metrics::ExecutionTracker:0x00007ec1bdb30cd8 @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @jobs={}, @totals={}, @grams={}, @lock=#<Thread::Mutex:0x00007ec1bdb30b20>>]>]>, @redis=#<ConnectionPool:0x00007ec1bdb2b288 @size=10, @timeout=1, @auto_reload_after_fork=true, @available=#<ConnectionPool::TimedStack:0x00007ec1bdb2b0f8 @create_block=#<Proc:0x00007ec1bdb2b210 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-7.1.4/lib/sidekiq/redis_connection.rb:22>, @created=1, @que=[#<Sidekiq::RedisClientAdapter::CompatClient:0x00007ec1bdb2a428 @client=#<RedisClient redis://159.203.99.32:6379/10>, @_pipeline_class=Sidekiq::RedisClientAdapter::CompatClient::Pipeline>], @max=10, @mutex=#<Thread::Mutex:0x00007ec1bdb2b058>, @resource=#<Thread::ConditionVariable:0x00007ec1bdb2afe0>, @shutdown_block=nil>, @key=:"pool-35360", @key_count=:"pool-35360-count">, @client_chain=#<Sidekiq::Middleware::Chain:0x00007ec1bdb18318 @config=#<Sidekiq::Config:0x00007ec1bf456280 ...>, @entries=[]>>, @scheduler_config={:enabled=>true, :dynamic=>false, :dynamic_every=>"5s", :schedule=>{"import_stocks"=>{"cron"=>"0 0 * * *", "class"=>"FinancialData::ImportStockListWorker", "queue"=>"low", "description"=>"Importing stock list"}}, :rufus_scheduler_options=>{}}>, @enabled=true, @dynamic=false, @dynamic_every="5s", @listened_queues_only=nil, @rufus_scheduler_options={}, @scheduled_jobs={"import_stocks"=>#<Rufus::Scheduler::CronJob:0x00007ec1bdb12f30 @scheduler=#<Rufus::Scheduler:0x00007ec1bdb13fc0 @opts={}, @started_at=#<EtOrbi::EoTime:0x00007ec1bdb13750 @seconds=1715080381.9655557, @zone=#<TZInfo::DataTimezone: Etc/UTC>, @time=nil>, @paused_at=nil, @jobs=#<Rufus::Scheduler::JobArray:0x00007ec1bdb13f20 @mutex=#<Thread::Mutex:0x00007ec1bdb13ea8>, @array=[#<Rufus::Scheduler::CronJob:0x00007ec1bdb12f30 ...>]>, @frequency=0.3, @discard_past=true, @mutexes={}, @work_queue=#<Thread::Queue:0x00007ec1bdb13bb0>, @join_queue=#<Thread::Queue:0x00007ec1bdb13b10>, @max_work_threads=28, @stderr=#<IO:<STDERR>>, @thread_key="rufus_scheduler_35380", @scheduler_lock=#<Rufus::Scheduler::NullLock:0x00007ec1bdb139d0>, @trigger_lock=#<Rufus::Scheduler::NullLock:0x00007ec1bdb13958>, @thread=#<Thread:0x00007ec1bdb13390 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/rufus-scheduler-3.9.1/lib/rufus/scheduler.rb:634 sleep>>, @original="0 0 * * *", @opts={:job=>true, :tags=>["import_stocks"]}, @handler=#<Proc:0x00007ec1bdb13048 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-scheduler-5.0.3/lib/sidekiq-scheduler/scheduler.rb:258>, @callable=#<Proc:0x00007ec1bdb13048 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-scheduler-5.0.3/lib/sidekiq-scheduler/scheduler.rb:258>, @scheduled_at=#<EtOrbi::EoTime:0x00007ec1bdb12e18 @seconds=1715080381.9664898, @zone=#<TZInfo::DataTimezone: Etc/UTC>, @time=nil>, @unscheduled_at=nil, @last_time=nil, @discard_past=nil, @locals={}, @local_mutex=#<Thread::Mutex:0x00007ec1bdb12d78>, @id="cron_1715080381.9664898_35400", @name=nil, @tags=["import_stocks"], @count=0, @last_work_time=0.0, @mean_work_time=0.0, @paused_at=nil, @times=nil, @first_at_no_error=false, @first_at=nil, @last_at=nil, @resume_discard_past=nil, @cron_line=#<Fugit::Cron:0x00007ec1bd7fd8b8 @original="0 0 * * *", @cron_s=nil, @day_and=nil, @seconds=[0], @minutes=[0], @hours=[0], @monthdays=nil, @months=nil, @weekdays=nil, @zone=nil, @timezone=nil>, @next_time=#<EtOrbi::EoTime:0x00007ec1bd7f61a8 @seconds=1715126400.0, @zone=#<TZInfo::DataTimezone: Etc/UTC>, @time=2024-05-08 00:00:00 +0000>>}, @rufus_scheduler=#<Rufus::Scheduler:0x00007ec1bdb13fc0 @opts={}, @started_at=#<EtOrbi::EoTime:0x00007ec1bdb13750 @seconds=1715080381.9655557, @zone=#<TZInfo::DataTimezone: Etc/UTC>, @time=nil>, @paused_at=nil, @jobs=#<Rufus::Scheduler::JobArray:0x00007ec1bdb13f20 @mutex=#<Thread::Mutex:0x00007ec1bdb13ea8>, @array=[#<Rufus::Scheduler::CronJob:0x00007ec1bdb12f30 @scheduler=#<Rufus::Scheduler:0x00007ec1bdb13fc0 ...>, @original="0 0 * * *", @opts={:job=>true, :tags=>["import_stocks"]}, @handler=#<Proc:0x00007ec1bdb13048 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-scheduler-5.0.3/lib/sidekiq-scheduler/scheduler.rb:258>, @callable=#<Proc:0x00007ec1bdb13048 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/sidekiq-scheduler-5.0.3/lib/sidekiq-scheduler/scheduler.rb:258>, @scheduled_at=#<EtOrbi::EoTime:0x00007ec1bdb12e18 @seconds=1715080381.9664898, @zone=#<TZInfo::DataTimezone: Etc/UTC>, @time=nil>, @unscheduled_at=nil, @last_time=nil, @discard_past=nil, @locals={}, @local_mutex=#<Thread::Mutex:0x00007ec1bdb12d78>, @id="cron_1715080381.9664898_35400", @name=nil, @tags=["import_stocks"], @count=0, @last_work_time=0.0, @mean_work_time=0.0, @paused_at=nil, @times=nil, @first_at_no_error=false, @first_at=nil, @last_at=nil, @resume_discard_past=nil, @cron_line=#<Fugit::Cron:0x00007ec1bd7fd8b8 @original="0 0 * * *", @cron_s=nil, @day_and=nil, @seconds=[0], @minutes=[0], @hours=[0], @monthdays=nil, @months=nil, @weekdays=nil, @zone=nil, @timezone=nil>, @next_time=#<EtOrbi::EoTime:0x00007ec1bd7f61a8 @seconds=1715126400.0, @zone=#<TZInfo::DataTimezone: Etc/UTC>, @time=2024-05-08 00:00:00 +0000>>]>, @frequency=0.3, @discard_past=true, @mutexes={}, @work_queue=#<Thread::Queue:0x00007ec1bdb13bb0>, @join_queue=#<Thread::Queue:0x00007ec1bdb13b10>, @max_work_threads=28, @stderr=#<IO:<STDERR>>, @thread_key="rufus_scheduler_35380", @scheduler_lock=#<Rufus::Scheduler::NullLock:0x00007ec1bdb139d0>, @trigger_lock=#<Rufus::Scheduler::NullLock:0x00007ec1bdb13958>, @thread=#<Thread:0x00007ec1bdb13390 /layers/heroku_ruby/gems/vendor/bundle/ruby/3.1.0/gems/rufus-scheduler-3.9.1/lib/rufus/scheduler.rb:634 sleep>>>>}
[2024-05-07 11:13:02] I, [2024-05-07T11:13:01.979786 #1]  INFO -- : Sidekiq 7.1.4 connecting to Redis with options {:size=>2, :pool_name=>"default", :url=>"redis://default:REDACTED@159.203.99.32:6379/10"}
[2024-05-07 11:13:02] D, [2024-05-07T11:13:01.985799 #1] DEBUG -- : Firing heartbeat event
[2024-05-07 11:13:02] I, [2024-05-07T11:13:02.176670 #1]  INFO -- : Sidekiq running embedded, total process thread count: 7
[2024-05-07 11:13:02] D, [2024-05-07T11:13:02.176758 #1] DEBUG -- : [nil, nil, nil, "sidekiq.heartbeat", "sidekiq.scheduler", "sidekiq.default/processor", "sidekiq.default/processor"]
[2024-05-07 11:13:02] [1] Puma starting in cluster mode...
[2024-05-07 11:13:02] [1] * Puma version: 5.6.8 (ruby 3.1.2-p20) ("Birdie's Version")
[2024-05-07 11:13:02] [1] *  Min threads: 5
[2024-05-07 11:13:02] [1] *  Max threads: 5
[2024-05-07 11:13:02] [1] *  Environment: production
[2024-05-07 11:13:02] [1] *   Master PID: 1
[2024-05-07 11:13:02] [1] *      Workers: 28
[2024-05-07 11:13:02] [1] *     Restarts: (✔) hot (✖) phased
[2024-05-07 11:13:02] [1] * Preloading application
[2024-05-07 11:13:02] [1] * Listening on http://0.0.0.0:8080
[2024-05-07 11:13:02] [1] Use Ctrl-C to stop
[]
;