Completed a fresh install but immediately get the above error trying to visit the site or backend. The line in question is

$request = Illuminate\Http\Request::capture()

I suspect that it has to do with the hosting service supporting both PHP 5.4 and PHP 7, and I see that any php system call will be processed by PHP 5 rather than 7. Is this the likely problem or is it something else? Is there any work-around? I'm currently dead int he water.