using the command in terminal:

cd ~/src/op25/python
./audio_p25_rx.py -a

i get this error:

Using Volk machine: ssse3_32
Traceback (most recent call last):
File "./audio_p25_rx.py", line 1044, in
app = stdgui2.stdapp(p25_rx_block, "APCO P25 Receiver", 3)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 38, in __init__
wx.App.__init__ (self, redirect=False)
File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7981, in __init__
self._BootstrapApp()
File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7555, in _BootstrapApp
return _core_.PyApp__BootstrapApp(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 42, in OnInit
self._max_noutput_items)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 64, in __init__
self.panel = stdpanel (self, self, top_block_maker, max_nouts)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 86, in __init__
self.top_block = top_block_maker (frame, self, vbox, sys.argv)
File "./audio_p25_rx.py", line 97, in __init__
self.__init_gui(frame, panel, vbox)
File "./audio_p25_rx.py", line 298, in __init_gui
self.slicer = op25.fsk4_slicer_fb(levels)
AttributeError: 'module' object has no attribute 'fsk4_slicer_fb'

can anybody help me with this error please?

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