Error 500 after update

Updated yesterday, now getting error 500.

ran through a number of options and checks, resolved some issues mainly with permissions but still unable to clear the error 500.

gitlab-ctl tail dump

Processing by RootController#index as HTML
Completed 500 Internal Server Error in 39ms (ActiveRecord: 0.8ms)

ExecJS::Error (ExecJS disabled):
lib/gitlab/gon_helper.rb:5:in add_gon_variables' lib/gitlab/middleware/multipart.rb:93:in call’
lib/gitlab/request_profiler/middleware.rb:14:in call' lib/gitlab/middleware/go.rb:16:in call’

Any help appreciated.

Morning information:

sudo gitlab-rake gitlab:env:info

System information
System: Ubuntu 16.04
Current User: git
Using RVM: no
Ruby Version: 2.3.3p222
Gem Version: 2.6.6
Bundler Version:1.13.7
Rake Version: 10.5.0
Redis Version: 3.2.5
Sidekiq Version:4.2.7

GitLab information
Version: 8.17.2
Revision: bab14bd
Directory: /opt/gitlab/embedded/service/gitlab-rails
DB Adapter: postgresql
SSH Clone URL:
Using LDAP: no
Using Omniauth: no

GitLab Shell
Version: 4.1.1
Repository storage paths:

  • default: /var/opt/gitlab/git-data/repositories
    Hooks: /opt/gitlab/embedded/service/gitlab-shell/hooks/
    Git: /opt/gitlab/embedded/bin/git