I got this error when I try to create a custom attribute for products:

The configuration parameter "formElement" is a required for "instruction" field.


namespace MyVendor\MyModule\Setup;

use Magento\Eav\Setup\EavSetup;
use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;

class InstallData implements InstallDataInterface
private $eavSetupFactory;

public function __construct(EavSetupFactory $eavSetupFactory)
    $this->eavSetupFactory = $eavSetupFactory;

public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
            'type' => 'text',
            'backend' => '',
            'frontend' => 'text',
            'label' => 'Installation Manual',
            'input' => '',
            'class' => '',
            'source' => '',
            'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,
            'visible' => true,
            'required' => false,
            'user_defined' => false,
            'default' => '',
            'searchable' => false,
            'filterable' => false,
            'comparable' => false,
            'visible_on_front' => false,
            'used_in_product_listing' => true,
            'unique' => false,
            'apply_to' => 'simple,configurable,virtual,bundle,downloadable,grouped',
            'group'=> 'General'

I'm using magento 2.1.8. I read that I have to change the frontend_input in the eav_attribute table in the database, but I don't want to add it manually, and I don't know what do I have to add there.

How can I add this attribute at the setup?



You can add attributes on admin... Stores > Attributes > Products

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