Fatal error: Uncaught AssertionError: Theme must be specified in C:\DATA\Wordpress\vivitionwebsite\wp-content\plugins\wp-vivition-integration-custom\vivition-php-library\VivitionIdentifier.php:44 Stack trace: #0 C:\DATA\Wordpress\vivitionwebsite\wp-content\plugins\wp-vivition-integration-custom\vivition-php-library\VivitionIdentifier.php(44): assert(false, 'Theme must be s...') #1 C:\DATA\Wordpress\vivitionwebsite\wp-content\plugins\wp-vivition-integration-custom\vivition-php-library\VivitionIdentifier.php(204): VivitionIdentifier->__construct('', NULL, NULL, NULL, NULL, NULL, NULL, '2a43b692-f8b7-4...') #2 C:\DATA\Wordpress\vivitionwebsite\wp-content\plugins\wp-vivition-integration-custom\classes\class-vivition-wordpress-shortcode.php(111): VivitionIdentifierProductGuid->__construct('', '2a43b692-f8b7-4...') #3 C:\DATA\Wordpress\vivitionwebsite\wp-includes\shortcodes.php(433): VivitionWPShortcode::insert_layout(Array, '\n