I had the same problem and I want to share with you guys.

Symfony \ Component \ Security \ Http \ Firewall ~ 107406 ms problem

Decision
In our case, the problem was the session processing that we used in the php.ini file.
Previous configuration;
session.save_handler = files
New configuration;
;session.save_handler = files session.save_handler = memcached session.save_path = "127.0.0.1:11212"
I changed the session handler to memcached. Since I already use memcached, I need a second instance of memcached, or when I implemented the additional port that memcached listened to, I solved this problem;
To start memcached to listen on two ports, I edit memcached.conf
Previous configuration;
-p 11211 -l 127.0.0.1
New configuration
#-p 11211 #-l 127.0.0.1 -l 127.0.0.1:11211 -l 127.0.0.1:11212
and just restarting the memcached instance, memcached started listening on two ports in the same instance.
service memcached restart
To verify that memcached is listening and responding to new ports, you can run the telnet command;
telnet 127.0.0.1 11211 telnet 127.0.0.1 11212
Expected Result:
Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'.
The result is very fast,

I hope this solution helps you.
bekco source share