I just patched magento 1.9.3.6 to support php7.2. Now we are not able to login.
Here's the error:
Warning: session_start(): Failed to read session data: memcache (path: unix:///var/run/memcached-multi/site.com_sessions.sock?persistent=1&weight=2&timeout=10&retry_interval=10) in /var/www/html/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php on line 134
Pls advice. Thanks