While upgrading D8.9 to D9.1 got the below issue. Tired all solution nothing works. Because on this issue site is down and unable to process anything.
[php7:notice] [pid 26850] SymfonyComponentDependencyInjectionExceptionServiceNotFoundException: The service "redirect.request_subscriber" has a dependency on a non-existent service "path.alias_manager". in /var/www/xxxx/xxxx/xxxx/vendor/symfony/dependency-injection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php on line 86
Could anyone faced this issue or how to overcome?