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Error with content() for JSON response #330

loganlinn opened this Issue Feb 1, 2016 · 6 comments


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loganlinn commented Feb 1, 2016

I am getting an error with latest httr version when calling content on a JSON response. Here's a small reproduction:

> httr::content(
+   httr::GET("", encoding="UTF-8"),
+   type = "application/json",
+   simplifyVector = TRUE
+ )
Error in simplify(obj, simplifyVector = simplifyVector, simplifyDataFrame = simplifyDataFrame,  :
  unused argument (encoding = NULL)

The error will actually go away if I don't use simplifyVector argument. But I think the real issue is lies in this change: f0fc278#diff-de09a71ef56d7758b0d08b98fe0520eaL68

The encoding argument was removed from function signature and now gets passed to jsonlite::fromJSON. If I put encoding = NULL back in that signature, ie removing it from ..., I no longer get the error


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s-r-k commented Feb 29, 2016

I am still receiving this error. Actually I am using another package that internally uses httr. Any workarounds? When can the solution be expected?


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alexdeng commented Mar 21, 2016

+1. hitted the same issue.


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maju116 commented Mar 24, 2016


1 similar comment

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MarcinKosinski commented Mar 24, 2016



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jeroen commented Mar 24, 2016

This needs to be fixed, but generally it is safer to extract the text and pass it to the parser yourself:

req <- httr::GET("")
text <- httr::content(req, "text", encoding="UTF-8")
data <- jsonlite::fromJSON(text)

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potockan commented Mar 25, 2016


pieterprovoost added a commit to iobis/robis that referenced this issue Apr 15, 2016

@hadley hadley closed this in c9a0dfc May 20, 2016

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