I tried almost everything but I keep receiving

Method not allowed

Method not allowed. Must be one of: POST

The code that I'm using is:

$app->post('/ticket/new', function (Request $request, Response $response) {
    // Create new book
    echo 'a;';
});

I'm trying on postman

method: post
url: /public/ticket/new
header: Content-Type application/javascript

Any clue will help me

.htaccess is ok:

RewriteEngine On

# Some hosts may require you to use the `RewriteBase` directive.
# If you need to use the `RewriteBase` directive, it should be the
# absolute physical path to the directory that contains this htaccess file.
#
# RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [QSA,L]

Thanks a lot

Have you tried something like:

$app->map(['GET', 'POST'],'/ticket/new', function (Request $request, Response     $response) {
    // Create new book
    echo 'a;';
});