After a 2.4.7-p3 to 2.4.8-p3 upgrade, setup:upgrade throws 'Cannot instantiate interface AttributeRepositoryInterface'. The root cause is stale compiled DI. Here is the exact recovery recipe plus the extension audit to run if it returns.
setup:di:compile pre-generates the factories, proxies and interceptors Magento would otherwise build at runtime. Here is exactly what it generates, the nine operations it runs, and why production cannot skip it.
A modern, copy-paste guide to building your first Magento 2 module: the two required files, a working route, a declarative database table, and a plugin, without a single deprecated install script.
AI scaffolds Magento modules in seconds, but generates code that looks right and breaks the framework's conventions. Here's how to build a custom extension properly in the AI era: the canonical anatomy, a working example, the AI gotchas to reject, and the gates that keep it maintainable.
