magento 2.0.7 sampledata:deploy|remove fatal error after composer update

Question

I've updated magento from 2.0.4 to 2.0.7 via composer. And then I tried to remove sample data using CLI

php70 bin/magento sampledata:remove

and got following error.

     PHP Fatal error: Uncaught TypeError: Argument 1 passed to 
Symfony\Component\Console\Input\ArrayInput::__construct() 
    must be of the type array, object given, called in
 /srv/mat24/web/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php 
on line 97 and defined in 
    /srv/mat24/web/vendor/symfony/console/Symfony/Component/Console/Input/ArrayInput.php:37
        Stack trace:
        #0 /srv/mat24/web/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(97): Symfony\Component\Console\Input\ArrayInput->__construct(Object(Magento\Framework\ObjectManager\ObjectManager))
        #1 /srv/mat24/web/vendor/magento/framework/ObjectManager/Factory/Compiled.php(88): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Symfony\Compone...', Array)
        #2 /srv/mat24/web/vendor/magento/framework/ObjectManager/ObjectManager.php(57): Magento\Framework\ObjectManager\Factory\Compiled->create('Symfony\Compone...', Array)
        #3 /srv/mat24/web/var/generation/Symfony/Component/Console/Input/ArrayInputFactory.php(43): Magento\Framework\Obje in /srv/mat24/web/vendor/symfony/console/Symfony/Component/Console/Input/ArrayInput.php on line 37

What could be the reason and how to fix that?

Answer 1

This is an (unresolved) issue with ArrayInputFactory in production mode (see here and here). Since your command is "one shot" you can switch your store in developer mode, launch the command, and then switch back to production mode.

BUT... sample data cannot really be removed

Answer 2

Try:

$./bin/magento setup:upgrade 
$ ./bin/magento cache:flush

And then remove the sample content

Answer 3

Have you done all these steps after upgrading :

php bin/magento setup:upgrade

php bin/magento setup:static-content:deploy

php bin/magento indexer:reindex.

Delete folders except .htaccess file from , m2_root_directory > pub > static and then m2_root_directory > var > view_preprocessed.

Flush Magento cache by typing “php bin/magento cache:flush” in CMD.

Then recheck it once.