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Jamie Schembri

@jamie.schembri.me

How do you manage error classes in your app?

- Granular — Domain::Specific::NotFoundError
- Generic/Reusable — Error::NotFound
- Not — StandardError/raise 'x'

Personally, I create my own error classes so I can see what's wrong at a glance, even if it means catching existing ones.

#RubyLang

May 16, 2025 at 9:35 AM

Dr Mircea Zloteanu 🌺🌞🍃

@mzloteanu.bsky.social

#statstab #464 Should a pilot study change your study design decisions?

Thoughts: You shouldn't use the ES, but you can use the SD (see also #192) for planning.

#pilot #experiments #poweranalysis #standarderror #simulation #methodology #SD #TypeM

declaredesign.org/blog/posts/p...

Should a pilot study change your study design decisions? – DeclareDesign

declaredesign.org

January 15, 2026 at 7:13 PM

Kuba Suder 🇵🇱🇺🇦

@mackuba.eu

Man, this is a bit of work… third day spent on this I think 😅 #ruby #rubylang

$API documentation for Skyfall: Top Level Namespace Skyfall CID < Object CarArchive < Object Collection DecodeError < Error Error < StandardError Firehose < Stream Jetstream < Stream Label < Object ReactorActiveError < Error Stream < Object SubscriptionError < Error UnsupportedError < Error Instance Method Summary collapse #build_websocket_url ⇒ String protected abstract Returns the full URL of the websocket endpoint to connect to, with path and query parameters if needed. #connect ⇒ nil Opens a connection to the configured websocket. #default_user_agent ⇒ String Default user agent sent when connecting to the service. #disconnect ⇒ nil (also: #close) Closes the connection and stops the EventMachine reactor thread. #handle_message(msg) ⇒ nil protected abstract Processes a single message received from the websocket. #initialize(server) ⇒ Stream constructor A new instance of Stream. #inspect ⇒ String Returns a string with a representation of the object for debugging purposes. #inspectable_variables ⇒ Array<Symbol> protected List of instance variables to be printed in the #inspect output. #on_connect(block) ⇒ nil Defines a callback to be run after a connection to the websocket is opened. #on_connecting(block) {|url| ... } ⇒ nil Defines a callback to be run when the client tries to open a connection to the websocket. #on_message(block) ⇒ nil Defines a callback to be run when a message is received, passing the message as a parsed object of an appropriate message class. #on_raw_message(block) ⇒ nil Defines a callback to be run when a message is received, passing a raw data packet as received from the websocket (plain text or binary).$

January 8, 2026 at 9:57 PM

Dr Mircea Zloteanu 🌺🌞🍃

@mzloteanu.bsky.social

#statstab #192 Statistical Power from Pilot Data

Thoughts: One new use for pilot data - estimating the SE to power your study. If you can follow the formula. By @carlislerainey

#pilot #experiments #poweranalysis #standarderror #simulation #methodology

www.carlislerainey.com/blog/2024-06...

Carlisle Rainey - Statistical Power from Pilot Data: Simulations to Illustrate

In this post, I discuss how pilot data can be used to predict the standard error in a planned study.

www.carlislerainey.com

October 1, 2024 at 5:11 PM

Kuba Suder 🇵🇱🇺🇦

@mackuba.eu

Ah yeah, error handling is tricky… especially since if you want to catch every possible network-related one but without catching a completely generic type like StandardError, you end up with like two lines of things like OpenSSL::Error, SocketError, Errno::ECONNREFUSED and so on :P

July 5, 2023 at 11:14 PM

garden-gnome.bsky.social

@garden-gnome.bsky.social

I honestly was not expecting to see this get fixed!

I ended up working around it by configuring RDS IAM Access which was a whole different saga.

github.com/aws/aws-acti...

Aws::Rails::SqsActiveJob#execute captures StandardError which is too wide · Issue #6 · aws/aws-activejob-sqs-ruby

Steps to reproduce Set up AWS RDS to manage master passwords and rotate Configure your database details via environment properties Wait for your DB password to change Once step 3 occurs my ActiveRe...

github.com

December 13, 2024 at 8:25 PM

KitsuKi

@kitsukibsmond.bsky.social

うむむ…
LightsailでWordpressの構築がボタンポチポチすればできるようになったと言うから試してみたけど、何度やっても最後のSSL証明書のところでエラーになる…
このエラーが出ると、パブリックIPアドレスにアクセスしてみるとアクセスできないんだけど、数分するとアクセスできるようになる。

エラーログを見ると、 "standardError": " Error code: CertbotAuthorizationFailed"ってところがそれなんだろうけど、トラブルシューティングにも無いし、他の情報も無く手がかりが無い。

まずはCertbotについて調べないとな…

August 14, 2024 at 1:05 PM

网上邻居 :verified_flashing:

@network.dongzhim.in.ap.brid.gy

这一切都是谷歌AI的功劳😌

[Unit]
Description=Elasticsearch
After=network.target

[Service]
Type=simple
User=elasticsearch
Group=elasticsearch
ExecStart=/opt/elasticsearch-8.4.1/bin/elasticsearch
StandardOutput=journal
StandardError=journal
LimitNOFILE=65536 […]

Original post on cmx.dongzhim.in

cmx.dongzhim.in

August 29, 2026 at 2:31 PM

Epstein Web

@epsteinweb.bsky.social

EFTA00156924.jpg
#epsteinweb #efta00156924
https://epsteinweb.org
Available in the iOS app store now!
https://apps.apple.com/us/app/epstein-web/id6758880661

EFTA00156888 | EFTA00156924
APPENDIX TABLE 2
Estimates and standard errors for figure 2: Percent of U.S. households who were victims of burglary, 1993-2019
Percent of households
Number of households
95% confidence interval
Standarderror
Year
Estimate
Estimate
Standard error
Lower bound
Upper bound
1993
1,282.240
47,291
2.57%
0.087%
2.406%
2.748%
1994
0.074
2,908.560
82,550
2.89
2.749
3.042
1995
2,699.990
90,709
2.66
0.082
2.503
2.827
1996
2,516,680
82,560
2.45
0.073
2.311
2.598
1997
2,491,980
99,083
2.40
0.078
2.247
2555
1998
2,236,960
88,836
2.12
0.070
1.990
2.267
1999
1,984,120
86,325
1.85
0.073
1.714
2.000
2000
1,901,640
83,087
1.76
0.070
1.622
1.899
2001
1,782,480
80,301
1.63
0.062
1.509
1.753
2002
1,787,400
74,716
1.62
0.062
1.503
1.746
2003
1,953,040
86,638
1.71
0.070
1.578
1.856
0.071
2004
1,895,120
84,424
1.64
1.502
1.784
2005
1,982,230
97,844
1.69
0.080
1541
1.859
2006
2007
1,737,940
75,913
1AS
0.060
1.340
1578
2008
1,694,440
76,960
1.40
0.061
1.284
1524
2009
1,809,050
84159
1.48
0.066
1.353
1.616
2010
1,775,970
72,335
1AS
0.057
1.338
1361
2011
1,797,370
74,809
1.46
0.055
1356
1374
2012
1,976,440
82,245
157
0.065
1.446
1.703
2013
1,775,400
79,872
139
0.061
1.276
1.517
2014
1,638,920
66,013
1.27
0.051
1.169
1.371
2015
1,562,130
74,217
1.18
0.055
1.080
1.297
2016
1,455,720
57,417
1.09
0.043
1.007
1.176
2017
1,273,410
58,760
1.03
0.047
0.947
1.131
2018
1,333,600
58,052
1.07
0.046
0.982
1163
2019
1,040,730
50,120
0.82
0.039
0.750
0.903
-Estimates for 2006 should not be compared to other years and are excluded from this table. See Criminal Victimization, 2007 (NCI 224390, IDS. December
2008) for more information on changes to the 2006 National Crime Victimization Survey.
Source: Bureau of Justice Statistics. National Crime Victimization Survey. 1993.2019.

CRIMINAL VICTIMIZATION, 2019 I SEPTEMBER 2020

37

3502-022
Page 37 of 53
EFIA_00001583

EFTA00156924

April 23, 2026 at 1:44 AM

ると

@cocoa-ruto.bsky.social

C#の例外処理ってどうやるものなんだろうか。
Javaの場合アプリケーションで補足すべきでないErrorと通常のExceptionが分けられているし、RubyもStandardErrorとそれ以外で区別されている。一方C#ではそのような区別は無いっぽい。
そうかといって投げる可能性のある例外の明示が型などで強制されている訳でもない。
雰囲気で例外処理するしかない?

May 4, 2025 at 10:14 AM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Restore fails due to disk space on migration I’ve got a standard install that’s trying to restore a database. It is failing on the migration. ALTER TABLE Migrating the database... EXCEPTION: ra...

#Hosting

Origin | Interest | Match

Restore fails due to disk space on migration

I’ve got a standard install that’s trying to restore a database. It is failing on the migration. ALTER TABLE Migrating the database... EXCEPTION: rake db:migrate Failed to migrate database. rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) PG::DiskFull: ERROR: could not write to file "base/pgsql_tmp/pgsql_tmp11009.51": No space left on device /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/a...

meta.discourse.org

February 11, 2026 at 1:34 AM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Restore fails due to disk space on migration I’ve got a standard install that’s trying to restore a database. It is failing on the migration. ALTER TABLE Migrating the database... EXCEPTION: ra...

#Hosting

Origin | Interest | Match

Restore fails due to disk space on migration

I’ve got a standard install that’s trying to restore a database. It is failing on the migration. ALTER TABLE Migrating the database... EXCEPTION: rake db:migrate Failed to migrate database. rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) PG::DiskFull: ERROR: could not write to file "base/pgsql_tmp/pgsql_tmp11009.51": No space left on device /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/a...

meta.discourse.org

February 9, 2026 at 8:32 PM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Migration error in 'rename_discourse_rewind_disabled_to_enabled' 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An e...

#Installation

Origin | Interest | Match

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos...

meta.discourse.org

January 10, 2026 at 10:32 AM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Migration error in 'rename_discourse_rewind_disabled_to_enabled' 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An e...

#Installation

Origin | Interest | Match

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos...

meta.discourse.org

January 10, 2026 at 7:17 AM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Migration error in 'rename_discourse_rewind_disabled_to_enabled' 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An e...

#Installation

Origin | Interest | Match

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos...

meta.discourse.org

January 10, 2026 at 5:28 AM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Migration error in 'rename_discourse_rewind_disabled_to_enabled' 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An e...

#Installation

Origin | Interest | Match

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos...

meta.discourse.org

January 9, 2026 at 7:24 PM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Migration error in 'rename_discourse_rewind_disabled_to_enabled' 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An e...

#Installation

Origin | Interest | Match

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos...

meta.discourse.org

January 9, 2026 at 2:44 PM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Migration error in 'rename_discourse_rewind_disabled_to_enabled' 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An e...

#Support

Origin | Interest | Match

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos...

meta.discourse.org

January 9, 2026 at 1:00 PM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

While trying to load /admin/docker/repos Error code: 500 error 重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has o...

Origin | Interest | Match

While trying to load /admin/docker/repos Error code: 500 error

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/15/bin/postmaster -D /etc/postgresql/15/main pid: 46 I, [2026-01-08T16:18:49.020147 #1] INFO -- : Sending TERM to exec chpst -u redis -U redis /usr/bin/redis-server /etc/redis/redis.conf pid: 113 2026-01-08 16:18:49.019 UTC [46] LOG: received fast shutdown request 113:signal-handler (1767889129) Received SIGTERM scheduling shutdown... 2026-01-08 16:18:49.023 UTC [46] LOG: aborting any active transactions 2026-01-08 16:18:49.034 UTC [46] LOG: background worker "logical replication launcher" (PID 60) exited with exit code 1 2026-01-08 16:18:49.040 UTC [55] LOG: shutting down 2026-01-08 16:18:49.042 UTC [55] LOG: checkpoint starting: shutdown immediate 2026-01-08 16:18:49.057 UTC [55] LOG: checkpoint complete: wrote 32 buffers (0.1%); 0 WAL file(s) added, 0 removed, 0 recycled; write=0.007 s, sync=0.004 s, total=0.017 s; sync files=16, longest=0.002 s, average=0.001 s; distance=180 kB, estimate=180 kB 2026-01-08 16:18:49.067 UTC [46] LOG: database system is shut down 113:M 08 Jan 2026 16:18:49.108 # User requested shutdown... 113:M 08 Jan 2026 16:18:49.108 * Saving the final RDB snapshot before exiting. 113:M 08 Jan 2026 16:18:49.123 * DB saved on disk 113:M 08 Jan 2026 16:18:49.123 # Redis is now ready to exit, bye bye... FAILED -------------------- Pups::ExecError: cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate' failed with return #<Process::Status: pid 4483 exit 1> Location of failure: /usr/local/lib/ruby/gems/3.3.0/gems/pups-1.3.0/lib/pups/exec_command.rb:131:in `spawn' exec failed with the params {"cd"=>"$home", "tag"=>"migrate", "hook"=>"db_migrate", "cmd"=>["su discourse -c 'bundle exec rake db:migrate'"]} bootstrap failed with exit code 1 ** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one. ./discourse-doctor may help diagnose the problem.

meta.discourse.org

January 8, 2026 at 6:39 PM

PostgreSQL

@postgresql.activitypub.awakari.com.ap.brid.gy

Update Error: "CopyAddGroupsToAbout ComponentSettings" SQL I am trying to update Discours...

https://meta.discourse.org/t/update-error-copyaddgroupstoabout-componentsettings-sql/367696

#Bug

Result Details

Update Error: "CopyAddGroupsToAbout ComponentSettings" SQL

I am trying to update Discourse, using the web-updater and receive the following error, I also update frequently so it is not a long-due update: Flushing service worker script done Running post deploy migrations $ bundle exec rake multisite:migrate -------------------------------------------------------------------------------- 1 migrations failed! Failed to migrate default #<StandardError:"An error has occurred, this and all later migrations canceled:\n\nPG::CardinalityViolation: ERROR: mor...

meta.discourse.org

May 28, 2025 at 7:37 AM

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