Error opening '*.wav': File contains data in an unknown format

Question

I'm trying to run the following code:

import os
import librosa  
import IPython.display as ipd
import matplotlib.pyplot as plt
import numpy as np
from scipy.io import wavfile 
import warnings
warnings.filterwarnings("ignore")

train_audio_path = 'train/audio/'
samples, sample_rate = librosa.load(train_audio_path+'yes/0a7c2a8d_nohash_0.wav', sr = 16000)

But get two errors:

Error opening 'train/audio/yes/0a7c2a8d_nohash_0.wav': File contains data in an unknown format

and

NoBackendError:

I've tried downloading ffmpeg and gstreamer to fix the second error but no luck. I'm not sure what to do about the first error as I have imported libraries that should be able to handle .wav files.

Thank you for your help in advance.