ERROR ON ADMIN URL

[All of the Above LLC]

My shop is fine and live - I'm still getting orders but when I try to go to the ADMIN side to add inventory and review orders,  When I try to get into the admin panel, this is the error I get.  Any help will be greatly appreciated!

Fatal error: Uncaught Error: Undefined class constant 'CACERT_LOCATION' in /home/lisalee/public_html/shop/classes/Tools.php:2058 Stack trace: #0 /home/lisalee/public_html/shop/classes/Tools.php(2084): ToolsCore::refreshCACertFile() #1 /home/lisalee/public_html/shop/classes/Tools.php(3467): ToolsCore::file_get_contents('https://api.add...', false, Resource id #98) #2 /home/lisalee/public_html/shop/classes/controller/AdminController.php(2148): ToolsCore::addonsRequest('native') #3 /home/lisalee/public_html/shop/classes/controller/AdminController.php(2129): AdminControllerCore->filterTabModuleList() #4 /home/lisalee/public_html/shop/classes/controller/AdminController.php(1612): AdminControllerCore->addToolBarModulesListButton() #5 /home/lisalee/public_html/shop/classes/controller/AdminController.php(2044): AdminControllerCore->initToolbar() #6 /home/lisalee/public_html/shop/classes/controller/Controller.php(189): AdminControllerCore->initContent() #7 /home/lisalee/public_html/shop/classes/Dispatcher.php(367): ControllerCore- in /home/lisalee/public_html/shop/classes/Tools.php on line 2058