polyfill-intl-icu | component provides a collection of functions/classes | Web Framework library

Sometimes when Travis CI is building my package, there's a short list of dependencies, like so:

We have the below contents on composer.json with dependencies and scripts. This comes from a legacy project where the vendors directory was pushed to GitHub. We're trying to remove that vendors directory from the repository to make its creation a part of the build process.

The last composer update completely broken my project based on Symfony5:

php.CRITICAL: Uncaught Error: Argument 1 passed to Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\DoctrineParamConverter::__construct() must be an instance of Doctrine\Common\Persistence\ManagerRegistry or null, instance of Doctrine\Bundle\DoctrineBundle\Registry given

I've already updated all the references of Doctrine\Bundle\DoctrineBundle\Registry to Doctrine\Common\Persistence\ManagerRegistry a long time ago, according to the Symfony documentation

Any help would be appreciated

List of installed packages:

I've got some troubles when i use composer require dompdf/dompdf. My result was :

When I do a composer update on my symfony 3.4.30 installation, it completes without problem, but when I try running composer install on the created lock file, it throws an error.

This happens both on my CentOS server, and my MacOS laptop. I have the latest composer installed:

Anyone know what is going on?

I have tried completely removing the vendor directory, and the composer.lock file with no success. I have also updated my composer version, and also cleared my composer cache:

I've got a weird error. I implemented the Form component in my own system. There I created a FormType where I use the EntityType for a field. Everytime i wanna create the form with the formBuilder it throws the following error:

PHP version:

A few months ago, we upgraded the intranet of our company from Symfony 2.3 to Symfony 2.8 and from PHP 5.6 to 7.0.10. Then, we encountered a lot of "Fatal Errors" due to circular references that could be "erased" by restarting Wampserver. I read that this could be because of passing some parameters to services. I corrected this by passing and setting as property only the container, even if I'm not convinced that this is a good practice. I also read that it could be because of opcache, so I disabled this.

After that, we no longer have this problem. However, since two weeks a new "Fatal error" appears randomly :

before i was stuck with this problem the project was running on PHP5.6 on SF2.6.

now im using PHP7.1.20 with SF2.8. i installed apcu along with apcu_bc inside my docker container and enabled the apcu php module.

now the error is: