staging error

cloud-user@infinispan-ci-3:~/ci/release/infinispan.github.io [develop|✔]$ ./bin/publish_staging.sh 
Processing infinispan
  9.0.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
unzip:  cannot find or open /mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/docs/9.0.x/*.zip, /mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/docs/9.0.x/*.zip.zip or /mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/docs/9.0.x/*.zip.ZIP.

No zipfiles found.
Alias dev
  8.2.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
Alias stable
  8.1.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
  8.0.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
  7.2.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
  7.1.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
  7.0.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
  6.0.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
  5.3.x
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=400m; support was removed in 8.0
Processing cachestores
  cassandra
  bdbje
  jdbm
  cloud
  hbase
  mongodb
  redis
Processing hotrod-clients
  cpp
  dotnet
  python
  ruby
Time elapsed 58.076540881 seconds
Missing runtime configuration to activate optional built-in extension minify.rb
  Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes.
RubyDep: WARNING: Your Ruby is outdated/buggy. (To disable warnings, set RUBY_DEP_GEM_SILENCE_WARNINGS=1)
RubyDep: WARNING: Your Ruby is: 2.3.0 (buggy). Recommendation: install 2.3.1.
Using profile: staging
Generating site: http://infinispan.github.io
While processing file 
An error occurred: Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes.
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<top (required)>'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/uglifier-3.0.0/lib/uglifier.rb:5:in `require'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/uglifier-3.0.0/lib/uglifier.rb:5:in `<top (required)>'
/mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/_ext/js_minifier.rb:1:in `require'
/mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/_ext/js_minifier.rb:1:in `<top (required)>'
/mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/_ext/pipeline.rb:2:in `require'
/mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/_ext/pipeline.rb:2:in `load_pipeline'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/lib/awestruct/engine.rb:287:in `eval'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/lib/awestruct/engine.rb:287:in `load_pipeline'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/lib/awestruct/engine.rb:83:in `run'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/lib/awestruct/cli/generate.rb:22:in `run'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/lib/awestruct/cli/invoker.rb:150:in `invoke_generate'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/lib/awestruct/cli/invoker.rb:74:in `invoke!'
/home/cloud-user/.rvm/gems/ruby-2.3.0/gems/awestruct-0.5.7/bin/awestruct:9:in `<top (required)>'
/home/cloud-user/.rvm/gems/ruby-2.3.0/bin/awestruct:23:in `load'
/home/cloud-user/.rvm/gems/ruby-2.3.0/bin/awestruct:23:in `<main>'
/home/cloud-user/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
/home/cloud-user/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `<main>'
Initialized empty Git repository in /mnt/persistent_storage/cloud-user/ci/release/infinispan.github.io/_stg/.git/
remote: Counting objects: 36505, done.
remote: Compressing objects: 100% (4361/4361), done.
remote: Total 36505 (delta 30137), reused 34035 (delta 28097)
Receiving objects: 100% (36505/36505), 52.40 MiB | 10.85 MiB/s, done.
Resolving deltas: 100% (30137/30137), done.
fatal: pathspec 'php' did not match any files
# On branch master
nothing to commit (working directory clean)
cp: cannot stat `../_site/*': No such file or directory
# On branch master
nothing to commit (working directory clean)
Everything up-to-date
******************************************************
       Staging Build Complete
       ----------------------
 Visit http://stg-ispn.rhcloud.com to test
******************************************************