Ruby/Gstreamer error

gistfile1.rb

require 'gst'

unless ARGV.length == 1
  $stderr.puts "Usage: #{__FILE__} <mp3 filename>"
  exit 1
end

# create a new pipeline to hold the elements
pipeline = Gst::Pipeline.new

# create a disk reader
httpsrc              = Gst::ElementFactory.make("souphttpsrc")
httpsrc.location     = ARGV.first
httpsrc.live         = true
httpsrc.do_timestamp = true

demuxer = Gst::ElementFactory.make("multipartdemux")

#demuxer have only sink pad, we need to add src
tmp = Gst::ElementFactory.find("multipartdemux").pad_templates.first
tpl = Gst::PadTemplate.new  caps: tmp.caps.to_caps,
                            name_template: tmp.name,
                            direction: tmp.direction,
                            presence: tmp.presence,
                            name: tmp.name

demuxer.add_pad Gst::Pad.new(template: tpl, direction: tpl.direction)

# now it's time to get the decoder
decoder = Gst::ElementFactory.make("jpegdec")

# and an video sink
audiosink = Gst::ElementFactory.make("xvimagesink")

# add objects to the main pipeline
pipeline.add(httpsrc, demuxer, decoder, audiosink)

# link elements
httpsrc >> demuxer >> decoder >> audiosink

# create the program's main loop
loop = GLib::MainLoop.new(GLib::MainContext.default, true)

# listen to playback events
pipeline.bus.add_watch do |bus, message|
  case message.type
  when Gst::Message::EOS
    loop.quit
  when Gst::Message::ERROR
    puts message.parse
    loop.quit
  end
  true
end

# start playing
pipeline.play
begin
  loop.run
rescue Interrupt
ensure
  pipeline.stop
end


# Error after trying to run this file 
# Internal data flow error.
# gstbasesrc.c(2582): gst_base_src_loop (): /GstPipeline:pipeline0/GstSoupHTTPSrc:souphttpsrc0:
# streaming task paused, reason not-linked (-1)

After few seconds from executing file, this error appears. I've checked if elements are linked, and all of them are.