ValueError when generating sentences while finetuning latest tacotron 2 model

I’ve been trying to fine tune the latest tacotron 2 model (no graves attention) from the released models page with a LJSpeech-like dataset but as i’m training it, it has a recurring error while generating certain sentences, here’s an example:

 !! Error creating Test Sentence - 3

Traceback (most recent call last):
File “”, line 503, in evaluate
ap.save_wav(wav, file_path)
File “/media/ssd/Projects/TTS-master/tts_namespace/TTS/utils/”, line 57, in save_wav
wav_norm = wav * (32767 / max(0.01, np.max(np.abs(wav))))
File “/media/ssd/mozillaTTS/lib/python3.6/site-packages/numpy/core/”, line 2320, in amax
out=out, **kwargs)
File “/media/ssd/mozillaTTS/lib/python3.6/site-packages/numpy/core/”, line 26, in _amax
return umr_maximum(a, axis, None, out, keepdims)
ValueError: zero-size array to reduction operation maximum which has no identity
I unfortunately have zero knowledge in machine learning so i do not know how to debug this.