PHP Fatal error: Uncaught Error: Undefined constant 'Magento\Framework\View\Element\Template\File'

[AndrewM]

I am trying to setup a magento site on my Windows server that has been sent to us from the old hosting company as a zip file.

I now get the following error:

PHP Fatal error: Uncaught Error: Undefined constant 'Magento\Framework\View\Element\Template\File' in C:\inetpub\vhosts\mydomain.co.uk\httpdocs\vendor\magento\framework\View\Element\Template\File\Valida...:6

The line referred to in the error message is:

namespace \Magento\Framework\View\Element\Template\File;

Can anybody advise what I should be changing to make this work?

[amitsamsukha]

@AndrewM 

check your PHP version & extensions 

Magento 2.4 supports PHP 7.4.0 

check your system requirements here

after that kindly update vendor dependency files using 

composer update 

into the website root directory 

if this finishes successfully than you can try with 

php bin/magento