I´m trying to install Prestashop in Xampp but appears that error. i tryed to uncomment the line in php.ini of "extension=php_intl.dll" And then restart Xampp but the error is appearing.
I´m using php 7.2 and the version of Prestashop is 1.7.6.
I solved the problem.
After try a lot of differents solutions i installed again Mamp and now its works.