Deprecated errors in wp-admin

[W3ap0n-X]

Customer reported getting multiple deprecated errors in their wp-admin dashboard.

PHP Deprecated: Creation of dynamic property BoldGrid_Framework::$changset_customization is deprecated in <root_dir>/wp-content/themes/crio/inc/boldgrid-theme-framework/includes/customizer/class-boldgrid-framework-customizer-colors.php on line 312
PHP Deprecated: Creation of dynamic property BoldGrid_Framework::$palette_changeset is deprecated in <root_dir>/wp-content/themes/crio/inc/boldgrid-theme-framework/includes/customizer/class-boldgrid-framework-customizer-colors.php on line 313
PHP Deprecated: Creation of dynamic property Boldgrid\Library\Library\Theme\UpdateData::$downloaded is deprecated in <root_dir>/wp-content/plugins/boldgrid-backup/vendor/boldgrid/library/src/Library/Theme/UpdateData.php on line 130
PHP Deprecated: Creation of dynamic property Boldgrid\Library\Library\Theme\UpdateData::$apiFetchTime is deprecated in <root_dir>/wp-content/plugins/boldgrid-backup/vendor/boldgrid/library/src/Library/Theme/UpdateData.php on line 132

To Reproduce
User has wp_debug and debug_display turned on and reports that errors show on all admin pages.