R：DoubleClick Campaign Manager Reporting API数据下载

Question

我们尝试从DoubleClick Campaign Manager Reporting API下载数据 我找到的唯一脚本是https://github.com/WillemPaling/RDoubleClick

#Install using:
library(devtools)
install_github("WillemPaling/RDoubleClick")

#Basic commands to get started:
##Authorise with the API
client.id <- "yourclientid.apps.googleusercontent.com"
client.secret <- "yourclientsecret"

DCAuth(client.id,client.secret)

到目前为止一切正常，认证也没问题 但是：运行时

##Get available profiles (to find your profile ID)
profiles <- userprofiles.list()

或

 profiles <- userprofiles.list(client.id,client.secret)

R产生错误

Error in fromJSON(api.request(req.url)) :
could not find function "api.request"
Called from: fromJSON(api.request(req.url))
Browse[1]>

其他人是否遇到过这些问题？我错过了任何已知的解决方案？谢谢你的帮助！