Working on Magento 2.1.8 and PHP 7. I have changed in Admin Panel
Stores -> Configuration -> Catalog -> XMLSitemap -> Search Engine Submission Settings the value of "Enable Submission to Robots.txt" to Yes.
Following error message I got:
Fatal error: Class Zend\Stdlib\ArrayObject contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (IteratorAggregate::getIterator) in C:\xampp\htdocs\pferd\vendor\zendframework\zend-stdlib\src\ArrayObject.php on line 22
Following the beginning of file ArrayObject.php
namespace Zend\Stdlib; use ArrayAccess; use Countable; use IteratorAggregate; use Serializable; **line 22** class ArrayObject implements IteratorAggregate, ArrayAccess, Serializable, Countable
How can I reverse the change? I have no access anymore to AdminPanel to reverse the change. Thanks