Openwisk getting bad request error(400) while trying to create from Laravel App

Trying to create a openwisk action from laravel, with python zip file, but getting following error

PUT https://192.168.1.13:31001/api/v1/namespaces/_/actions/test_new_03?blocking=true&result=true&overwrite=false` resulted in a `400 Bad Request` response:
{"code":"H6PLPnMvnyTnzhNt6X8IQiAt8IDRAmLK","error":"The request content was malformed:\nUnexpected end-of-input at input (truncated...)

here is my header

'headers' => [
                'Authorization' => 'Basic <token>',
                'stream' => true,
                "Connection" => "keep-alive",
                "content-type" => "application/json"
            ]

using guzzle http.

via Chebli Mohamed