No Whales firdes error after end of input .wav file

[Abraxas3d]

The following error occurs when the .wav input file runs out.

Carrier + doppler continues

aUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUException in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/abraxas3d/Documents/Deviations/top_block.py", line 96, in _doppler_probe
self.set_doppler(val)
File "/home/abraxas3d/Documents/Deviations/top_block.py", line 260, in set_doppler
self.band_pass_filter_0.set_taps(firdes.band_pass(1, self.interpolation_rate, self.carrier+self.doppler - self.samp_rate/2, self.carrier+self.doppler + self.samp_rate/2, 400, firdes.WIN_HAMMING, 6.76))
File "/usr/lib/python3/dist-packages/gnuradio/filter/filter_swig.py", line 183, in band_pass
return _filter_swig.firdes_band_pass(*args, **kwargs)
RuntimeError: firdes check failed: 0 < fb <= sampling_freq / 2