Joomla! Programmers Documentation

Some frequently asked questions on Error messages and how to resolve them.

As a developer you sometimes will be stuck in your code. If it happens to you, also have a look on https://joomla.stackexchange.com/ - a huge collection of valuable knowledge. Here we collect some frequently asked questions.

Class [..] not found¶

You need to understand the namespace concept as described in section General Concepts (work in progress) Then check:

• Is the namespace defined in your manifest file?
• Has every class in your extension the correct namespace?
• Is every filename correct and matches the namespace?

Examples: Code: use FooNamespace\Component\Foos\Administrator\Extension\FooComponent

But the filename is src/Extension/FoosComponent.php