Not able to login after upgrade

I upgraded gitlab from gitlab-ce-12.0.2-ce.0.el7.x86_64 to gitlab-ce-12.0.3-ce.0.el7.x86_64. After upgrade everything seemed to be working fine.

But I am not able to login to web. When I launch the URL I get a sign in button, but clicking on it does nothing. I don’t get any page to enter user name and password. There are no errors in the console and the log that I see tail is as below:

==> /var/log/gitlab/nginx/gitlab_access.log <==

10.28.209.19 - - [04/Jul/2019:02:40:12 -0400] "GET /users/sign_in HTTP/1.1" 200 3038 "" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36"

10.28.209.19 - - [04/Jul/2019:02:40:13 -0400] "GET /uploads/-/system/appearance/header_logo/1/ytlc.png HTTP/1.1" 304 0 "http://10.28.19.103:8080/users/sign_in" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36"
/var/log/gitlab/gitlab-rails/production.log
Started GET "/" for 10.28.209.17 at 2019-07-04 22:52:58 +0800
Processing by RootController#index as HTML
Redirected to http://10.28.19.103:8080/users/sign_in
Filter chain halted as :redirect_unlogged_user rendered or redirected
Completed 302 Found in 55ms (ActiveRecord: 14.1ms)
Started GET "/users/sign_in" for 10.28.209.17 at 2019-07-04 22:52:58 +0800
Processing by SessionsController#new as HTML
Completed 200 OK in 37ms (Views: 20.7ms | ActiveRecord: 2.0ms)
Started GET "/uploads/-/system/appearance/header_logo/1/ytlc.png" for 10.28.209.17 at 2019-07-04 22:52:59 +0800
Processing by UploadsController#show as HTML
  Parameters: {"model"=>"appearance", "mounted_as"=>"header_logo", "id"=>"1", "filename"=>"ytlc.png"}
Sent file /opt/gitlab/embedded/service/gitlab-rails/public/uploads/-/system/appearance/header_logo/1/ytlc.png (0.6ms)
Completed 200 OK in 857ms (ActiveRecord: 45.9ms)
Started GET "/-/metrics" for 127.0.0.1 at 2019-07-04 22:53:03 +0800
Processing by MetricsController#index as HTML
Completed 200 OK in 5ms (Views: 0.7ms | ActiveRecord: 0.0ms)
Started GET "/-/metrics" for 127.0.0.1 at 2019-07-04 22:53:18 +0800
Processing by MetricsController#index as HTML
Completed 200 OK in 4ms (Views: 0.6ms | ActiveRecord: 0.0ms)

Please help.