{"action":"created","issue":{"url":"https://api.github.com/repos/amir20/phantomjs-node/issues/424","repository_url":"https://api.github.com/repos/amir20/phantomjs-node","labels_url":"https://api.github.com/repos/amir20/phantomjs-node/issues/424/labels{/name}","comments_url":"https://api.github.com/repos/amir20/phantomjs-node/issues/424/comments","events_url":"https://api.github.com/repos/amir20/phantomjs-node/issues/424/events","html_url":"https://github.com/amir20/phantomjs-node/issues/424","id":143544435,"number":424,"title":"info: TypeError: null is not an object (evaluating 'child.transform')","user":{"login":"niknickolas","id":4051329,"avatar_url":"https://avatars.githubusercontent.com/u/4051329?v=3","gravatar_id":"","url":"https://api.github.com/users/niknickolas","html_url":"https://github.com/niknickolas","followers_url":"https://api.github.com/users/niknickolas/followers","following_url":"https://api.github.com/users/niknickolas/following{/other_user}","gists_url":"https://api.github.com/users/niknickolas/gists{/gist_id}","starred_url":"https://api.github.com/users/niknickolas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/niknickolas/subscriptions","organizations_url":"https://api.github.com/users/niknickolas/orgs","repos_url":"https://api.github.com/users/niknickolas/repos","events_url":"https://api.github.com/users/niknickolas/events{/privacy}","received_events_url":"https://api.github.com/users/niknickolas/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2016-03-25T17:12:17Z","updated_at":"2016-04-07T00:01:01Z","closed_at":"2016-03-28T01:53:41Z","body":"### Environment\r\n\r\n- OS: Ubuntu 14\r\n- Node version (`node -v`): v5.9.1\r\n- package version: '2.0.10'\r\n\r\nThis  error occurs when I launch my code on server side and when I use method evaluate, after this output I  stopped execution because on local computer it is working very well. Environment of local server is similar to production server.\r\n \r\ninfo: TypeError: null is not an object (evaluating 'child.transform')\r\ninfo: \r\ninfo:   phantomjs://code/shim.js:131 in transform\r\ninfo:   phantomjs://code/shim.js:112 in read\r\n\r\nWhat I have to do to get same  result  as on my local server ?"},"comment":{"url":"https://api.github.com/repos/amir20/phantomjs-node/issues/comments/206626521","html_url":"https://github.com/amir20/phantomjs-node/issues/424#issuecomment-206626521","issue_url":"https://api.github.com/repos/amir20/phantomjs-node/issues/424","id":206626521,"user":{"login":"MichaelJCole","id":1504790,"avatar_url":"https://avatars.githubusercontent.com/u/1504790?v=3","gravatar_id":"","url":"https://api.github.com/users/MichaelJCole","html_url":"https://github.com/MichaelJCole","followers_url":"https://api.github.com/users/MichaelJCole/followers","following_url":"https://api.github.com/users/MichaelJCole/following{/other_user}","gists_url":"https://api.github.com/users/MichaelJCole/gists{/gist_id}","starred_url":"https://api.github.com/users/MichaelJCole/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MichaelJCole/subscriptions","organizations_url":"https://api.github.com/users/MichaelJCole/orgs","repos_url":"https://api.github.com/users/MichaelJCole/repos","events_url":"https://api.github.com/users/MichaelJCole/events{/privacy}","received_events_url":"https://api.github.com/users/MichaelJCole/received_events","type":"User","site_admin":false},"created_at":"2016-04-07T00:01:01Z","updated_at":"2016-04-07T00:01:01Z","body":"Hey @amir20 I think I got the same error with the following code:\r\n\r\n```\r\npage.setting('userAgent', undefined)\r\n```"}}