502 error gitlab 13.8.8
hi I upgrade my gitlab 13.1.11 to 13.8.8 on centos7 But it seems not work. The web page showed "502. Whoops, GitLab is taking too much time to respond."
[root@li1882-194 ~]# gitlab-ctl status
run: gitaly: (pid 15369) 1264s; run: log: (pid 9085) 4428s
run: gitlab-workhorse: (pid 15383) 1264s; run: log: (pid 9345) 4316s
run: logrotate: (pid 15396) 1264s; run: log: (pid 9409) 4302s
run: nginx: (pid 15403) 1264s; run: log: (pid 9376) 4310s
run: puma: (pid 15424) 1262s; run: log: (pid 9257) 4328s
run: redis: (pid 15433) 1262s; run: log: (pid 9014) 4434s
run: sidekiq: (pid 15515) 1258s; run: log: (pid 9287) 4321s/var/log/gitlab/gitlab-workhorse/current logs
{"level":"info","msg":"keywatcher: starting process loop","time":"2021-11-29T08:32:36Z"}
{"address":"/var/opt/gitlab/redis/redis.socket","level":"info","msg":"redis: dialing","network":"unix","time":"2021-11-29T08:32:36Z"}
{"build_time":"20210413.231711","level":"info","msg":"Starting","time":"2021-11-29T08:39:01Z","version":"v8.59.3"}
{"level":"info","msg":"keywatcher: starting process loop","time":"2021-11-29T08:39:01Z"}
{"address":"/var/opt/gitlab/redis/redis.socket","level":"info","msg":"redis: dialing","network":"unix","time":"2021-11-29T08:39:01Z"}
{"error":"keywatcher: pubsub receive: EOF","level":"error","msg":"","time":"2021-11-29T08:39:03Z"}
{"address":"/var/opt/gitlab/redis/redis.socket","level":"info","msg":"redis: dialing","network":"unix","time":"2021-11-29T08:39:03Z"}
{"error":"keywatcher: dial unix /var/opt/gitlab/redis/redis.socket: connect: no such file or directory","level":"error","msg":"","time":"2021-11-29T08:39:03Z"}
{"address":"/var/opt/gitlab/redis/redis.socket","level":"info","msg":"redis: dialing","network":"unix","time":"2021-11-29T08:39:03Z"}
```
but /var/opt/gitlab/redis/redis.socket can be found
how to solve it