Hello welcome to the post!
Look for “MultiPHP Manager” in Cpanel search bar or on home page of your Cpanel after login.
It will show you your current System PHP version and below option to change the setting for PHP version as required.
From dropdown menu like on right select the version of PHP you needed and apply, before that not to forget to select the list of domains, if you have multiple websites or subdomains to apply the latest PHP version.
Hope this solves your issue to the fastest when composer dependencies gives error like below when you trying to test small issue of your website.
{ "message": "syntax error, unexpected token \")\"", "exception": "ParseError", "file": "/home4/ininszp2/abclar/vendor/symfony/css-selector/XPath/Extension/NodeExtension.php", "line": 68, "trace": [ { "file": "/home4/ininszp2/abclar/vendor/composer/ClassLoader.php", "line": 428, "function": "Composer\\Autoload\\includeFile" }, { "file": "/home4/ininszp2/abclar/vendor/symfony/css-selector/XPath/Translator.php", "line": 56, "function": "loadClass", "class": "Composer\\Autoload\\ClassLoader", "type": "->" }, { "file": "/home4/ininszp2/abclar/vendor/symfony/css-selector/CssSelectorConverter.php", "line": 40, "function": "__construct", "class": "Symfony\\Component\\CssSelector\\XPath\\Translator", "type": "->" }, { "file": "/home4/ininszp2/abclar/vendor/tijsverkoyen/css-to-inline-styles/src/CssToInlineStyles.php", "line": 19, "function": "__construct", "class": "Symfony\\Component\\CssSelector\\CssSelectorConverter", "type": "->" }, { "file": "/home4/ininszp2/abclar/vendor/laravel/framework/src/Illuminate/Mail/Markdown.php", "line": 73, "function": "__construct", "class": "TijsVerkoyen\\CssToInlineStyles\\CssToInlineStyles", "type": "->" }, { "file": "/home4/ininszp2/abclar/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php", "line": 309, "function": "render", "class":Thanks for reading and Happy learning!