Pollux I confirm the errors you see, to reproduce it, enable debugging in config.php; to hide it disable debugging.
The error come from register() method in src\Providers\SearchServiceProvider.php.
I've found how to fix it by enabling commented lines, but doesn't understand it and why the author commented those lines. @ganuonglachanh Can you enlighten us please ? ?
To fix it, comment those lines :
$value = $this->app->make('GaNuongLaChanh\Search\Driver\MySqlDiscussionTitleDriver');
$this->app->when('GaNuongLaChanh\Search\Gambit\TitleGambit')
->needs('GaNuongLaChanh\Search\Driver\MySqlDiscussionTitleDriver')
->give($value);
And uncomment those lines :
$this->app->singleton('GaNuongLaChanh\Search\Driver\MySqlDiscussionTitleDriver', function ($app) {
return new \GaNuongLaChanh\Search\Driver\MySqlDiscussionTitleDriver();
});