Not sure what I'm doing wrong. Locally the file works with
/*
Theme Name:     Symbiostock Child
Theme URI:      http://drpgraphicdesign.com
Description:    Symbiostock Child
Author:         Dallas Price
Author URI:     http://drpgraphicdesign.com
Template:       Symbiostock
Version:        1.0.0
*/

/* =Imports styles from the parent theme
-------------------------------------------------------------- */
@import url("../symbiostock/style.css");


/* =Theme customization starts here
-------------------------------------------------------------- */

But, online I'm getting "The parent theme is missing" :/

Sorry, fixed it with a lowercase s.