Is sasl needed for PhpBB and when compiling memcache?

Question

PHP

When compiling the memcache extension for php, it constantly asks for sasl, says that in the libmemcached library I have disabled support for this very sasl and that I must set the --disable-sasl flag if I want the memcache extension to be compiled. Naturally, I put a flag because xs how to enable it (I googled it).
Raising the site gives me an error, it seems that phpBB stores sessions in a memcache, and sasl is a simple authentication of a chota there and the question is: maybe this error flies out of this? Or should I look elsewhere?
Fatal error: Uncaught Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "sp.common.cache_helper". in /usr/share/nginx/html/sp/forum/phpBB3/vendor/symfony/dependency-injection/ContainerBuilder.php:816 Stack trace: #0 /usr/share/nginx/html/sp/forum/phpBB3/vendor /symfony/dependency-injection/ContainerBuilder.php(456): Symfony\Component\DependencyInjection\ContainerBuilder->getDefinition('sp.common.cache...') #1 /usr/share/nginx/html/sp/forum /phpBB3/phpbb/session.php(224): Symfony\Component\DependencyInjection\ContainerBuilder->get('sp.common.cache...') #2 /usr/share/nginx/html/sp/forum/phpBB3 /app.php(26): phpbb\session->session_begin() #3 {main} thrown in /usr/share/nginx/html/sp/forum/phpBB3/vendor/symfony/dependency-injection/ContainerBuilder.