Hi all.

I have a custom plugin to store the response body on Redis and in some use cases I get an error decoding the information stored on Redis with this error: bad argument #1 to '?' (string expected, got nil)

So when I get the response body with PDK I encode that on redis

  local body = kong.response.get_raw_body()
  local status = kong.response.get_status()
  if body then
    ngx.timer.at(0, store_cache_value, conf, ctx.req_body, status, proxy_cache)
  end

but when I fetch the data from redis with

local req_obj, error_decode= cjson.decode(req_json)

    if not req_obj then
... [here I get the error saying that I can not decode with ]bad argument #1 to '?' (string expected, got nil)

after further validation and test I can reproduce when the data as invalid json, but my point is why using kong.response.get_raw_body() I get invalid json.

thanks