Latest Articles

Detect that an element does not exist with Pyppeteer — catch the `waitForSelector` timeout and return `None`.

When you log in to Ubuntu via SSH, you see the following message: "10 packages can be updated. 5 updates are security updates."

When trying to connect MySQL Client 8.0 to MySQL 5.6, DataGrip displays an error message: "[08S01] Communications link failure java.io.EOFException: SSL peer shut down incorrectly," and the connection fails.

Distinguish 'draft' vs 'published' state for a Mezzanine BlogPost while editing — handling in both Admin and templates.

Install k3s (a lightweight Kubernetes distribution) on a Raspberry Pi (Raspbian) and bring up a single-node cluster — step-by-step.

If you encounter the django.db.utils.InterfaceError: "(0, '')" error When this error occurs intermittently during get operations depending on the table or record, it might be due to a mismatch in the connection character encoding.

If a Django project that has been working until now fails to start after a long time with the following error: ``` version_info, _mysql.version_info, _mysql.__file__ NameError: name '_mysql' is not defined ```

This article introduces a TypeScript decorator code that displays a toast notification when the $axios.$get method fails within an async method in a Nuxt.js application.

When running `python3 ./manage.py runserver 8080`, I encountered the error `django.db.utils.OperationalError: (2000, 'Unknown MySQL error')`. This error occurs when the `OPTIONS` setting includes `'charset': 'utf8mb4'`.

Configure `~/.i2csshrc` so the `i2cssh` command can fan out SSH connections through a bastion / jump host to multiple servers.

Resolve `mkmf.rb can't find header files for ruby` when installing the `i2cssh` Ruby gem — install `ruby-dev` (or `ruby-headers`) and retry the gem install.

Introduction to Python Script Code

Pitfalls when running a local server with `php -S` on macOS Big Sur or later, and how to terminate SSL with a separate proxy.

I upgraded Ubuntu to version 20.04, and when I tried to connect to MySQL, I encountered the following error: ERROR 2026 (HY000): SSL connection error: error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol. As a result, I was unable to connect to MySQL.

Introduction to Python Code for APIView.

MySQLdb._exceptions.OperationalError: (1467, 'Failed to read auto-increment value from storage engine') In Django, when you specify an implicit id, the above error occurs if the auto increment value reaches its upper limit.

Output every request header and response info to the nginx access log via a custom `log_format`, with an Ansible playbook to deploy it.

While using flutter_downloader 1.3.4 with Flutter, the app crashes at await FlutterDownloader.initialize() when debugging from Android Studio. However, the app does not crash when launched from XCode. If anyone knows how to fix this, please let me know.

Open a specific 1Password item directly from the Mac terminal with `open 'onepassword://...'` — also how to get the item URL.

Fix `ssl.SSLCertVerificationError` in Django `send_mail` — check `EMAIL_USE_SSL` / `EMAIL_USE_TLS` and certificate trust chain.