Hello, beautiful PHP people. I need some help which I could not find in the documentation. I am new to Slim and I am trying to run a project with Slim 4. However, I am having difficulty using Slim 4. I followed the example in the URL below which seems to work only for older versions.
https://pastebin.com/3PYqECrJ
The brackets at the very end here $app = new App(); are highlighted by the IDE and when I hover it says: Required parameter $responseFactory missing.
And when I run the project it shows this error:
Fatal error : Uncaught ArgumentCountError: Too few arguments to function Slim\App::__construct(), 0 passed in /opt/lampp/htdocs/vruummates/app/start.php on line 14 and at least 1 expected in /opt/lampp/htdocs/vruummates/vendor/slim/slim/Slim/App.php:57 Stack trace: #0 /opt/lampp/htdocs/vruummates/app/start.php(14): Slim\App->__construct() #1 /opt/lampp/htdocs/vruummates/index.php(3): require(’/opt/lampp/htdo…’) #2 {main} thrown in /opt/lampp/htdocs/vruummates/vendor/slim/slim/Slim/App.php on line 57
Does anyone have any idea why is that and what am I not doing right? Thank you in advance for your help.
Hi 
In slim 4, if you do not want to inject the needed dependencies into App(), you should use the Factory provided.
use Slim\Factory\AppFactory;
$app = AppFactory::create();
Slim website has it on the front page http://www.slimframework.com/
Hope it helps.
1 Like
Wow,
I did not expect someone to respond so quickly. Thank you!
I saw that and tried it too, but I get another error which I was googling to resolve but could not find anything. I appreciate your help. Here is the error:
Fatal error : Uncaught RuntimeException: Could not detect any PSR-17 ResponseFactory implementations. Please install a supported implementation in order to use AppFactory::create(). See https://github.com/slimphp/Slim/blob/4.x/README.md for a list of supported implementations. in /opt/lampp/htdocs/vruummates/vendor/slim/slim/Slim/Factory/AppFactory.php:166 Stack trace: #0 /opt/lampp/htdocs/vruummates/vendor/slim/slim/Slim/Factory/AppFactory.php(92): Slim\Factory\AppFactory::determineResponseFactory() #1 /opt/lampp/htdocs/vruummates/app/start.php(14): Slim\Factory\AppFactory::create() #2 /opt/lampp/htdocs/vruummates/index.php(3): require(’/opt/lampp/htdo…’) #3 {main} thrown in /opt/lampp/htdocs/vruummates/vendor/slim/slim/Slim/Factory/AppFactory.php on line 166
You are Welcome
I think there is always someone around.
You need to provide a PSR 7 library.
Slim has one: slim/psr7, but you can use others.
The App Factory can autoload Guzzle, Nyholm, Zend and Slim ones. Just use composer to require one of those.
For example:
composer require slim/psr7
More info on:
http://www.slimframework.com/docs/v4/start/installation.html
1 Like
Great! Thanks very much for your help, indeed. I am getting there.
I did that, but now it is showing the error below. I found a few things in stackoverflow and I am going to try them tomorrow. Once again, thanks a lot. I can’t wait to start working on this project
Warning : require(/opt/lampp/htdocs/vruummates/vendor/composer/…/illuminate/support/helpers.php): failed to open stream: No such file or directory in /opt/lampp/htdocs/vruummates/vendor/composer/autoload_real.php on line 66
Fatal error : require(): Failed opening required ‘/opt/lampp/htdocs/vruummates/vendor/composer/…/illuminate/support/helpers.php’ (include_path=’.:/opt/lampp/lib/php’) in /opt/lampp/htdocs/vruummates/vendor/composer/autoload_real.php on line 66
For what I can see there is something that is not in the right place but is clearly not related to Slim.
I would start by deleting all composer dependencies and run composer again to do a clean install.
Don’t know if it will help but it seems like a simple thing to try. Like restarting a computer when something is not working properly.
1 Like
Thanks a lot for your help. I fixed it. It works now. I uninstalled all dependencies and then installed them one by one as you suggested. At the end I installed slim/psr7. I also cleared cash on Composer and updated it. And it works as expected! YAY!