Recently updating my project from Symfony 2.6 to Symfony 3.4. I received the following error while running my app:
(1/1) FatalErrorException Compile Error: Declaration of Symfony\Component\DependencyInjection\ContainerBuilder::set($id, $service) must be compatible with Symfony\Component\DependencyInjection\ContainerInterface::set($id, >$service, $scope = self::SCOPE_CONTAINER)
in ContainerBuilder.php line 51
Please help me resolve the problem?