Fatal error

Hello,
I’m receiving a fatal error when accessing the edit page for this link. Unfortunately I am unable to update any code or information. Please advise on how I can fix this.

Here is the fatal error message:
“Uncaught Error: Class ‘WP_Smush’ not found in /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/plugin-compat/wp-smushit.php:50 Stack trace: #0 /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/plugin-compat/wp-smushit.php(20): ET_Builder_Plugin_Compat_Smush->init_hooks() #1 /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/plugin-compat/wp-smushit.php(70): ET_Builder_Plugin_Compat_Smush->__construct() #2 /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-plugin-compat-loader.php(57): require_once(‘/home4/wahkce0a…’) #3 /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-plugin-compat-loader.php(20): ET_Builder_Plugin_Compat_Loader->init_hooks() #4 /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-plugin-compat-loader.php(28): ET_Builder_Plugin_Compat_Loader->__construct() #5 /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/ in /home4/wahkce0aerpm/public_html/wp-content/themes/Divi/includes/builder/plugin-compat/wp-smushit.php on line 50”

The page I need help with: [log in to see the link]