wp_postmeta: Table ‘Sql712040_3.wp_postmeta’ doesn’t exist

You can create one by going to phpMyAdmin or SQLYog to connect to your backend database on the server. Then run the SQL statement below. DONE.
CREATE TABLE Sql712040_3.wp_postmeta (
meta_id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
post_id bigint(20) unsigned NOT NULL DEFAULT ‘0’,
meta_key varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
meta_value longtext COLLATE utf8mb4_unicode_ci,
PRIMARY KEY (meta_id),
KEY post_id (post_id),
KEY meta_key (meta_key(191))
) ENGINE=MyISAM AUTO_INCREMENT=2294 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci