{"action":"closed","issue":{"url":"https://api.github.com/repos/leeper/margins/issues/11","repository_url":"https://api.github.com/repos/leeper/margins","labels_url":"https://api.github.com/repos/leeper/margins/issues/11/labels{/name}","comments_url":"https://api.github.com/repos/leeper/margins/issues/11/comments","events_url":"https://api.github.com/repos/leeper/margins/issues/11/events","html_url":"https://github.com/leeper/margins/issues/11","id":59387433,"number":11,"title":"Fix invalid variable names error","user":{"login":"leeper","id":3505428,"avatar_url":"https://avatars.githubusercontent.com/u/3505428?v=3","gravatar_id":"","url":"https://api.github.com/users/leeper","html_url":"https://github.com/leeper","followers_url":"https://api.github.com/users/leeper/followers","following_url":"https://api.github.com/users/leeper/following{/other_user}","gists_url":"https://api.github.com/users/leeper/gists{/gist_id}","starred_url":"https://api.github.com/users/leeper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/leeper/subscriptions","organizations_url":"https://api.github.com/users/leeper/orgs","repos_url":"https://api.github.com/users/leeper/repos","events_url":"https://api.github.com/users/leeper/events{/privacy}","received_events_url":"https://api.github.com/users/leeper/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/leeper/margins/labels/bug","name":"bug","color":"fc2929"}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2015-03-01T07:56:20Z","updated_at":"2016-07-28T09:31:18Z","closed_at":"2016-07-28T09:31:18Z","body":"\r\n```R\r\n> margins(lm(mpg ~ am:wt, data = mtcars))\r\nError in deriv3.default(reformulate(f)[[2]], u) : invalid variable names\r\n```"}}
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