我正在使用redcap API尝试将文件上传到数据访问组内的文件存储库中：

library(RCurl)
#!/usr/bin/env Rscript
token <- "xyz123456"
url <- "https://redcap.myredcap/api/"
file <- '//example/my_directory/file_example.html'
formData <- list("token"=token,
                 action='import',
                 content='fileRepository',
                 folder_id=1,
                 returnFormat='json',
                 file=file
)
response <- httr::POST(url, body = formData, encode = "multipart")
result <- httr::content(response)
print(result)

字符串
获取此错误：

$error
[1] "No valid file was uploaded"

型
任何帮助赞赏！