On Magento 2.3 Backoffice > Sellers grid, got a php error "undefined index extension_attributes" on Plugin/RetailerCollectionPlugin.php line 104
"require": {
"magento/product-community-edition": "2.3.0",
"mageplaza/magento-2-arabic-language-pack": "dev-master",
"mageplaza/magento-2-french-language-pack": "dev-master",
"smile/elasticsuite": "^2.7",
"smile/magento2-library-framework": "^4.0",
"smile/module-backend": "^4.0",
"smile/module-core": "^4.0",
"smile/module-cron": "^4.0",
"smile/module-indexer": "^4.0",
"smile/module-map": "^1.1",
"smile/module-patch": "^1.0",
"smile/module-reconfigure": "^4.0",
"smile/module-retailer": "^1.2",
"smile/module-seller": "^1.2",
"smile/module-store-locator": "^1.3",
"smile/module-varnish": "^4.0"
},
"require-dev": {
"friendsofphp/php-cs-fixer": "~2.13.0",
"lusitanian/oauth": "~0.8.10",
"magento/magento2-functional-testing-framework": "2.3.9",
"pdepend/pdepend": "2.5.2",
"phpmd/phpmd": "@stable",
"phpunit/phpunit": "~6.5.0",
"sebastian/phpcpd": "~3.0.0",
"smile/magento2-library-testframework": "^4.0",
"smile/module-debug-toolbar": "^4.0",
"smile/php-codesniffer-rules-magento-2": "^2.0",
"smile/spbuilder": "^4.0",
"squizlabs/php_codesniffer": "3.3.1"
},