The Prestashop 1.7.6.4 backend access issue

[start10designs]

we are unable to access the backend of the Prestashop website.

Error Log

request.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalErrorException: "Error: Maximum execution time of 60 seconds exceeded" at /var/www/html/classes/controller/AdminController.php line 2028 {"exception":"[object] (Symfony\Component\Debug\Exception\FatalErrorException(code: 0): Error: Maximum execution time of 60 seconds exceeded at /var/www/html/classes/controller/AdminController.php:2028)"} []

request.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalErrorException: "Error: Maximum execution time of 60 seconds exceeded" at /var/www/html/src/PrestaShopBundle/Routing/Converter/AbstractLegacyRouteProvider.php line 68 {"exception":"[object] (Symfony\Component\Debug\Exception\FatalErrorException(code: 0): Error: Maximum execution time of 60 seconds exceeded at /var/www/html/src/PrestaShopBundle/Routing/Converter/AbstractLegacyRouteProvider.php:68)"} []

Anyone can please help