So I’ve been developing a small modular app locally, my local environment mirrors production as closely as possible (same php version, same OS and version). Production is on EC2.
Now I deployed to production, and on my module routes I received Page Not Found, everywhere.
After hours of debugging I figured out that it was the optional route parameters:
$app->group('', function () {
$this->get('/', '\Klever\Modules\Apps\Controllers\ContentController:index')->setName('home');
$this->get('/apps[/{slug}[/]]', '\Klever\Modules\Apps\Controllers\ContentController:show')->setName('detail');
$this->get('/category[/{slug}[/]]', '\Klever\Modules\Apps\Controllers\CategoryController:index')->setName('categories');
$this->get('/search[/{term}]]', '\Klever\Modules\Apps\Controllers\SearchController:index')->setName('search');
})
->add('csrf');
The category and search route are loaded in every Twig view.
When I switch the optional part and make it required, it all starts to work:
$app->group('', function () {
$this->get('/', '\Klever\Modules\Apps\Controllers\ContentController:index')->setName('home');
$this->get('/apps/{slug}[/]', '\Klever\Modules\Apps\Controllers\ContentController:show')->setName('detail');
$this->get('/category/{slug}[/]', '\Klever\Modules\Apps\Controllers\CategoryController:index')->setName('categories');
$this->get('/search/{term}[/]', '\Klever\Modules\Apps\Controllers\SearchController:index')->setName('search');
})
->add('csrf');
I’m honestly still not sure why it doesn’t work on production with the optional parameters, and secretly hope it’s something obvious you guys will tell me, so that I can find peace 
Routes are like this:
http://dev.vm//apps/com.eyewind.paperone/
This route works with optional or required params on my local setup, but in production it only works when I remove the optional parts.