database error Key column 'enddate'

 WordPress database error Key column 'enddate' doesn't exist in table for query 
		ALTER TABLE  `wp_pmpro_membership_levels` ADD INDEX (  `enddate` )
	 made by activate_plugin, include_once('/plugins/paid-memberships-pro/paid-memberships-pro.php'), pmpro_checkForUpgrades, pmpro_upgrade_1_2_3