If a composer.json has a syntax error then bin/magento fails with a cryptic message like «An abstract factory could not create an instance of magentosetupconsolecommandmoduleuninstallcommand». I propose to show a more clear message instead.

[dmitrii-fediuk]

https://www.google.ru/search?q=%22An+abstract+factory+could+not+create+an+instance+of%22+%5Bsite:github.com/magento/magento2+OR+site:devdocs.magento.com/guides/v2.0/+OR+site:mage2.pro%5D&gws_rd=cr&ei=wRs_Vq6NNYbZyAP-v4a4DA

[mazhalai]

This is consistent with symfony's verbosity levels as mentioned in ticket #2300 (comment)
Closing for now. Please reopen if this is still an issue.

[smatric]

Verbosity levels don't help. Below is my case.

I'm developing a new module. In this file:

app/code/Smatric/DealerApplyForm/etc/module.xml

I have a typo:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
    <module name="Smatric_DealerAppyForm" setup_version="1.0.0" />
</config>

It should be "Smatric_DealerApplyForm" and not "Smatric_DealerAppyForm".

With that typo, if I run:

$ php bin/magento -vvv | grep -ni "Dealer"

I get useless error message with no mention of my new module. I really suggest you make your error reporting clearer.

Here's the message I get:

  [Zend\ServiceManager\Exception\ServiceNotCreatedException]                                                                                                          
  An abstract factory could not create an instance of magentosetupconsolecommandmoduleuninstallcommand(alias: Magento\Setup\Console\Command\ModuleUninstallCommand).  



Exception trace:
 () at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:1135
 Zend\ServiceManager\ServiceManager->createFromAbstractFactory() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:646
 Zend\ServiceManager\ServiceManager->doCreate() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:598
 Zend\ServiceManager\ServiceManager->create() at /var/www/html/m2/setup/src/Magento/Setup/Console/CommandList.php:89
 Magento\Setup\Console\CommandList->getCommands() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:107
 Magento\Framework\Console\Cli->getApplicationCommands() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:84
 Magento\Framework\Console\Cli->getDefaultCommands() at /var/www/html/m2/vendor/symfony/console/Symfony/Component/Console/Application.php:91
 Symfony\Component\Console\Application->__construct() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:76
 Magento\Framework\Console\Cli->__construct() at /var/www/html/m2/bin/magento:24





  [Zend\ServiceManager\Exception\ServiceNotCreatedException]                                                           
  An exception was raised while creating "Magento\Setup\Console\Command\ModuleUninstallCommand"; no instance returned  



Exception trace:
 () at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:946
 Zend\ServiceManager\ServiceManager->createServiceViaCallback() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:1129
 Zend\ServiceManager\ServiceManager->createFromAbstractFactory() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:646
 Zend\ServiceManager\ServiceManager->doCreate() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:598
 Zend\ServiceManager\ServiceManager->create() at /var/www/html/m2/setup/src/Magento/Setup/Console/CommandList.php:89
 Magento\Setup\Console\CommandList->getCommands() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:107
 Magento\Framework\Console\Cli->getApplicationCommands() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:84
 Magento\Framework\Console\Cli->getDefaultCommands() at /var/www/html/m2/vendor/symfony/console/Symfony/Component/Console/Application.php:91
 Symfony\Component\Console\Application->__construct() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:76
 Magento\Framework\Console\Cli->__construct() at /var/www/html/m2/bin/magento:24





  [Magento\Framework\Exception\FileSystemException]  
  The file "/composer.json" doesn't exist            



Exception trace:
 () at /var/www/html/m2/vendor/magento/framework/Filesystem/File/Read.php:75
 Magento\Framework\Filesystem\File\Read->assertValid() at /var/www/html/m2/vendor/magento/framework/Filesystem/File/Read.php:61
 Magento\Framework\Filesystem\File\Read->open() at /var/www/html/m2/vendor/magento/framework/Filesystem/File/Read.php:51
 Magento\Framework\Filesystem\File\Read->__construct() at /var/www/html/m2/vendor/magento/framework/Filesystem/File/ReadFactory.php:40
 Magento\Framework\Filesystem\File\ReadFactory->create() at /var/www/html/m2/vendor/magento/framework/Config/FileIterator.php:69
 Magento\Framework\Config\FileIterator->current() at /var/www/html/m2/vendor/magento/framework/Config/FileIterator.php:111
 Magento\Framework\Config\FileIterator->toArray() at /var/www/html/m2/vendor/magento/framework/Module/PackageInfo.php:81
 Magento\Framework\Module\PackageInfo->load() at /var/www/html/m2/vendor/magento/framework/Module/PackageInfo.php:208
 Magento\Framework\Module\PackageInfo->getRequire() at /var/www/html/m2/vendor/magento/framework/Module/DependencyChecker.php:132
 Magento\Framework\Module\DependencyChecker->createGraph() at /var/www/html/m2/vendor/magento/framework/Module/DependencyChecker.php:53
 Magento\Framework\Module\DependencyChecker->__construct() at /var/www/html/m2/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:101
 Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject() at /var/www/html/m2/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php:89
 Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create() at /var/www/html/m2/vendor/magento/framework/ObjectManager/ObjectManager.php:71
 Magento\Framework\ObjectManager\ObjectManager->get() at /var/www/html/m2/setup/src/Magento/Setup/Console/Command/ModuleUninstallCommand.php:140
 Magento\Setup\Console\Command\ModuleUninstallCommand->__construct() at n/a:n/a
 ReflectionClass->newInstanceArgs() at /var/www/html/m2/vendor/zendframework/zend-di/src/Di.php:495
 Zend\Di\Di->createInstanceViaConstructor() at /var/www/html/m2/vendor/zendframework/zend-di/src/Di.php:298
 Zend\Di\Di->newInstance() at /var/www/html/m2/vendor/zendframework/zend-di/src/Di.php:247
 Zend\Di\Di->get() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/Di/DiServiceFactory.php:103
 Zend\ServiceManager\Di\DiServiceFactory->get() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/Di/DiAbstractServiceFactory.php:43
 Zend\ServiceManager\Di\DiAbstractServiceFactory->createServiceWithName() at n/a:n/a
 call_user_func() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:939
 Zend\ServiceManager\ServiceManager->createServiceViaCallback() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:1129
 Zend\ServiceManager\ServiceManager->createFromAbstractFactory() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:646
 Zend\ServiceManager\ServiceManager->doCreate() at /var/www/html/m2/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:598
 Zend\ServiceManager\ServiceManager->create() at /var/www/html/m2/setup/src/Magento/Setup/Console/CommandList.php:89
 Magento\Setup\Console\CommandList->getCommands() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:107
 Magento\Framework\Console\Cli->getApplicationCommands() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:84
 Magento\Framework\Console\Cli->getDefaultCommands() at /var/www/html/m2/vendor/symfony/console/Symfony/Component/Console/Application.php:91
 Symfony\Component\Console\Application->__construct() at /var/www/html/m2/vendor/magento/framework/Console/Cli.php:76
 Magento\Framework\Console\Cli->__construct() at /var/www/html/m2/bin/magento:24