Fatal error: Uncaught Error: Interface 'Magento\Elasticsearch\Model\Adapter\FieldMapper\Product\FieldProvider\FieldIndex\ConverterInterface' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-elasticsearch/Elasticsearch5/Model/Adapter/FieldMapper/Product/FieldProvider/FieldIndex/Converter.php:15 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-elasticsearch/Elasticsearch5/Model/Adapter/FieldMapper/Product/FieldProvider/FieldIndex/Converter.php on line 15