502 error after upgrade to git version 2.21.0

Dear Friends,

I have upgraded git lab to git version 2.21.0 version , i could see the latest version but unable to access, getting 502 git lab is taking too much time to respond, also i had created clone of this vm and unable to login with users.

root@gitlab-enterprise-edition-1-vm:~# gitlab-ctl start
ok: run: gitaly: (pid 4151) 0s
ok: run: gitlab-monitor: (pid 28382) 286s
ok: run: gitlab-workhorse: (pid 28393) 285s
ok: run: logrotate: (pid 28417) 285s
ok: run: nginx: (pid 28440) 284s
ok: run: node-exporter: (pid 4216) 0s
ok: run: postgres-exporter: (pid 4217) 0s
ok: run: postgresql: (pid 28863) 271s
ok: run: prometheus: (pid 5058) 0s
ok: run: redis: (pid 28963) 299s
ok: run: redis-exporter: (pid 28967) 298s
ok: run: sidekiq: (pid 5049) 1s
ok: run: unicorn: (pid 5037) 1s

again failing

root@gitlab-enterprise-edition-1-vm:~# gitlab-ctl status
down: gitaly: 1s, normally up, want up; run: log: (pid 1108) 1936s
run: gitlab-monitor: (pid 28382) 987s; run: log: (pid 1123) 1936s
run: gitlab-workhorse: (pid 28393) 986s; run: log: (pid 1115) 1936s
run: logrotate: (pid 28417) 986s; run: log: (pid 1117) 1936s
run: nginx: (pid 28440) 985s; run: log: (pid 1111) 1936s
down: node-exporter: 0s, normally up, want up; run: log: (pid 1107) 1936s
down: postgres-exporter: 0s, normally up, want up; run: log: (pid 1113) 1936s
run: postgresql: (pid 28863) 970s; run: log: (pid 1110) 1936s
down: prometheus: 1s, normally up, want up; run: log: (pid 1126) 1936s
run: redis: (pid 28963) 968s; run: log: (pid 1106) 1936s
run: redis-exporter: (pid 28967) 967s; run: log: (pid 1133) 1936s
run: sidekiq: (pid 23487) 5s; run: log: (pid 1109) 1936s
run: unicorn: (pid 23612) 1s; run: log: (pid 1114) 1936s

=================

==> /var/log/gitlab/node-exporter/current <==
2019-05-09_16:36:02.71249 node_exporter: error: unknown short flag ‘-w’, try --help

==> /var/log/gitlab/unicorn/current <==
2019-05-09_16:36:02.20565 failed to start a new unicorn master
2019-05-09_16:36:02.24514 starting new unicorn master
2019-05-09_16:36:02.24608 chpst: fatal: unknown user/group: git:

==> /var/log/gitlab/postgres-exporter/current <==
2019-05-09_16:36:02.71303 postgres_exporter: error: unknown short flag ‘-w’, try --help

==> /var/log/gitlab/prometheus/current <==
2019-05-09_16:36:03.30773 chpst: fatal: unable to run: /opt/gitlab/embedded/bin/prometheus: file does not exist

==> /var/log/gitlab/gitaly/current <==
2019-05-09_16:36:03.56860 time=“2019-05-09T16:36:03Z” level=info msg=“Starting Gitaly” version=“Gitaly, version 1.34.1”
2019-05-09_16:36:03.56866 time=“2019-05-09T16:36:03Z” level=warning msg=“git path not configured. Using default path resolution” resolvedPath=/opt/gitlab/embedded/bin/git
2019-05-09_16:36:03.57339 time=“2019-05-09T16:36:03Z” level=warning msg=“git path not configured. Using default path resolution” resolvedPath=/opt/gitlab/embedded/bin/git
2019-05-09_16:36:03.57341 time=“2019-05-09T16:36:03Z” level=warning msg=“Gitaly bin directory is not configured” error=“stat : no such file or directory”
2019-05-09_16:36:03.57341 time=“2019-05-09T16:36:03Z” level=fatal msg=“load config” config_path=/var/opt/gitlab/gitaly/config.toml error=“gitlab-shell.dir is not set”

==> /var/log/gitlab/node-exporter/current <==
2019-05-09_16:36:03.73055 node_exporter: error: unknown short flag ‘-w’, try --help

==> /var/log/gitlab/unicorn/current <==
2019-05-09_16:36:03.26179 failed to start a new unicorn master
2019-05-09_16:36:03.30118 starting new unicorn master
2019-05-09_16:36:03.30212 chpst: fatal: unknown user/group: git:

==> /var/log/gitlab/postgres-exporter/current <==
2019-05-09_16:36:03.73201 postgres_exporter: error: unknown short flag ‘-w’, try --help
^CTraceback (most recent call last):
/opt/gitlab/embedded/bin/omnibus-ctl: Interrupt