Problem with Route_To

SYSTEMPATH/CodeIgniter.php : 234   —  CodeIgniter\Exceptions\FrameworkException::forMissingExtension ()

That error means your missing the intl php extension in your php.ini file you need to edit it and
add the extension.

Also if your upgrading from 4.0.4 then there were also changes made to the app folder Config/app.php etc;
So you would need to also replace the app folder.

try this some times fixes the problem.

PHP Code:

route_to(base_url('your_url')); 


It does not solve the problem for me, but I will have to give you a bad solution.

I see badly that to update the version I have to update the app folder where I have all the code, that is not feasible. That does not help to always be updated.

Thanks for your time and for your help.