Notice: Undefined variable: theme in /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/michelemarri/templates/post/content-single.php on line 7

Fatal error: Uncaught Error: Call to a member function get() on null in /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/michelemarri/templates/post/content-single.php:7 Stack trace: #0 /opt/bitnami/apps/wordpress/htdocs/wp-includes/template.php(724): require() #1 /opt/bitnami/apps/wordpress/htdocs/wp-includes/template.php(671): load_template('/opt/bitnami/ap...', false) #2 /opt/bitnami/apps/wordpress/htdocs/wp-includes/general-template.php(168): locate_template(Array, true, false) #3 /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/michelemarri/single.php(21): get_template_part('templates/post/...', '') #4 /opt/bitnami/apps/wordpress/htdocs/wp-includes/template-loader.php(78): include('/opt/bitnami/ap...') #5 /opt/bitnami/apps/wordpress/htdocs/wp-blog-header.php(19): require_once('/opt/bitnami/ap...') #6 /opt/bitnami/apps/wordpress/htdocs/index.php(17): require('/opt/bitnami/ap...') #7 {main} thrown in /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/michelemarri/templates/post/content-single.php on line 7