Series of Errors Related to Theme?

Hello. I am running HighEnd on Bluehost. At mid-day, a series of errors occurred, which is visible on the front-end and back-end. The site is mheds.org. The theme is version is 4.0.1. Autoupdates are turned off. Current WordPress version was held at Current version: 6.1.5.

The errors are as follows:

Deprecated: Use of “self” in callables is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/options-framework/autoload.php on line 126

Deprecated: Creation of dynamic property Highend::$options is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/functions.php on line 181

Deprecated: Creation of dynamic property Highend::$customizer is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/functions.php on line 184

Deprecated: Creation of dynamic property Highend::$admin is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/functions.php on line 188

Deprecated: Creation of dynamic property Highend::$updates is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/functions.php on line 192

Deprecated: Creation of dynamic property VP_Option::$_dev_mode is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/options-framework/classes/option.php on line 788

Deprecated: Creation of dynamic property VP_Option::$_minimum_role is deprecated in /home4/stratgt6/public_html/mheds/wp-content/themes/HighendWP/options-framework/classes/option.php on line 730

Can you assist?