Edit file File name : 20200617122511_CreateSEOLinksTable.php Content :<?php namespace Yoast\WP\SEO\Config\Migrations; use Yoast\WP\Lib\Migrations\Migration; use Yoast\WP\Lib\Model; /** * CreateSEOLinksTable class. */ class CreateSEOLinksTable extends Migration { /** * The plugin this migration belongs to. * * @var string */ public static $plugin = 'free'; /** * Migration up. * * @return void */ public function up() { $table_name = $this->get_table_name(); $adapter = $this->get_adapter(); // The table may already have been created by legacy code. // If not, create it exactly as it was. if ( ! $adapter->table_exists( $table_name ) ) { $table = $this->create_table( $table_name, [ 'id' => false ] ); $table->column( 'id', 'biginteger', [ 'primary_key' => true, 'limit' => 20, 'unsigned' => true, 'auto_increment' => true, ] ); $table->column( 'url', 'string', [ 'limit' => 255 ] ); $table->column( 'post_id', 'biginteger', [ 'limit' => 20, 'unsigned' => true, ] ); $table->column( 'target_post_id', 'biginteger', [ 'limit' => 20, 'unsigned' => true, ] ); $table->column( 'type', 'string', [ 'limit' => 8 ] ); $table->finish(); } if ( ! $adapter->has_index( $table_name, [ 'post_id', 'type' ], [ 'name' => 'link_direction' ] ) ) { $this->add_index( $table_name, [ 'post_id', 'type' ], [ 'name' => 'link_direction' ] ); } // Add these columns outside of the initial table creation as these did not exist on the legacy table. $this->add_column( $table_name, 'indexable_id', 'integer', [ 'unsigned' => true ] ); $this->add_column( $table_name, 'target_indexable_id', 'integer', [ 'unsigned' => true ] ); $this->add_column( $table_name, 'height', 'integer', [ 'unsigned' => true ] ); $this->add_column( $table_name, 'width', 'integer', [ 'unsigned' => true ] ); $this->add_column( $table_name, 'size', 'integer', [ 'unsigned' => true ] ); $this->add_column( $table_name, 'language', 'string', [ 'limit' => 32 ] ); $this->add_column( $table_name, 'region', 'string', [ 'limit' => 32 ] ); $this->add_index( $table_name, [ 'indexable_id', 'type' ], [ 'name' => 'indexable_link_direction' ] ); } /** * Migration down. * * @return void */ public function down() { $this->drop_table( $this->get_table_name() ); } /** * Returns the SEO Links table name. * * @return string */ private function get_table_name() { return Model::get_table_name( 'SEO_Links' ); } } Save