Part7b Deployment failing

[obsidian-1]

nn = NeuralNetworkOverlay('hls4ml_nn.bit', X_test.shape, y_test.shape)
The above function fails with the error:

`---------------------------------------------------------------------------
error Traceback (most recent call last)
in ()
----> 1 nn = NeuralNetworkOverlay('hls4ml_nn.bit', X_test.shape, y_test.shape)

/home/xilinx/jupyter_notebooks/package/axi_stream_driver.py in init(self, bitfile_name, x_shape, y_shape, dtype, dtbo, download, ignore_version, device)
9 self, bitfile_name, x_shape, y_shape, dtype=np.float32, dtbo=None, download=True, ignore_version=False, device=None
10 ):
---> 11 super().init(bitfile_name, dtbo=None, download=True, ignore_version=False, device=None)
12 self.sendchannel = self.hier_0.axi_dma_0.sendchannel
13 self.recvchannel = self.hier_0.axi_dma_0.recvchannel

/usr/local/lib/python3.6/dist-packages/pynq/overlay.py in init(self, bitfile_name, dtbo, download, ignore_version, device)
323
324 if download:
--> 325 self.download()
326
327 self.doc = _build_docstring(self._ip_map._description,

/usr/local/lib/python3.6/dist-packages/pynq/overlay.py in download(self, dtbo)
372 Clocks.set_pl_clk(i)
373
--> 374 super().download(self.parser)
375 if dtbo:
376 super().insert_dtbo(dtbo)

/usr/local/lib/python3.6/dist-packages/pynq/bitstream.py in download(self, parser)
141
142 """
--> 143 self.device.download(self, parser)
144
145 def remove_dtbo(self):

/usr/local/lib/python3.6/dist-packages/pynq/pl_server/device.py in download(self, bitstream, parser)
568 def download(self, bitstream, parser=None):
569 if not bitstream.binfile_name:
--> 570 _preload_binfile(bitstream)
571
572 if not bitstream.partial:

/usr/local/lib/python3.6/dist-packages/pynq/pl_server/device.py in _preload_binfile(bitstream)
507 bitstream.firmware_path = os.path.join('/lib/firmware',
508 bitstream.binfile_name)
--> 509 bit_dict = parse_bit_header(bitstream.bitfile_name)
510 if bit_dict != bitstream.bit_data:
511 bitstream.bit_data = bit_dict

/usr/local/lib/python3.6/dist-packages/pynq/pl_server/device.py in parse_bit_header(bitfile)
457
458 # Strip the (2+n)-byte first field (2-bit length, n-bit data)
--> 459 length = struct.unpack('>h', contents[offset:offset + 2])[0]
460 offset += 2 + length
461

error: unpack requires a buffer of 2 bytes`

My device is the Pynq-z2 board running the 4.19.0-xilinx-v2019.1 kernel

Compiled on host using vivado 2019.2 on Ubuntu 20.04.1.