How can optimizing the autoloader using the -o parameter in Composer help resolve class not found errors in PHP projects, and what steps should be taken to implement this optimization?

Optimizing the autoloader using the -o parameter in Composer can help resolve class not found errors in PHP projects by generating a class map that maps all classes in the project to their respective file locations. This can improve the autoloading performance and ensure that all classes are correctly loaded when needed.

composer dump-autoload -o