Depending on your project setup, updating the Coder module from earlier versions to version 8.3.14 might lead to the referenced sniff does not exist error. Let's find out how to fix it.
Composer is a great tool for Drupal and in general PHP developers, but in some cases, it might take some effort to accomplish what you want. I tried to install Drupal 9 (dev version) and Drush 10 today and here's what I had to do to make it work.
dix is a simple console application that will make your life easier if you are working with MySQL databases. Let's say that you are working with some PHP framework or CMS and that you want to test a new module/plugin/add-on, or maybe you just want to upgrade to the latest version. The very first thing you should do is make a backup of your database. Doing this will save you a lot of headaches if something goes wrong.