I migrated from Magento 1.9.1.0 to Magento 2.3.1...the migration was completed with warnings and after I reindexed and flushed cache and also set upgrade, compile, and deploy, Clicking on All Customers at admin backend displays error, can't view all customers and some customer information like the shipping address, billing address, contact, and name is missing from the order page.
I have remigrated countless times with different solutions but I still get the same error.
{"0":"Type Error occurred when creating object: Magento\Eav\Model\Entity\Attribute\Source\Config","1":"#1 Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\Eav\Mode...', array()) called at [vendor/magento/framework/ObjectManager/ObjectManager.php:56]\
I was expecting the customer page should load properly and also view all customers shouldn't be giving errors cos I have really gone through hell trying to solve this. I would be grateful for any assistance.