I keep having the same error when trying to denoise an audio file using pywavelets and i'm not sure what to change

Question

import numpy as np
import soundfile
from moviepy.editor import VideoFileClip
import pywt

def extract_audio(input_video_path, output_audio_path):
video_clip = VideoFileClip(input_video_path)
audio_clip = video_clip.audio
audio_data = np.array(audio_clip.to_soundarray(fps=44100), dtype=np.int16)

    if len(audio_data.shape) > 1 and audio_data.shape[1] > 1:
        audio_data = np.mean(audio_data, axis=1, dtype=np.int16)
    
    soundfile.write(output_audio_path, audio_data, audio_clip.fps)

def denoise_audio(input_audio_path, output_audio_path, threshold=0.2):
audio_data, rate = soundfile.read(input_audio_path)

    # Wavelet denoising
    threshold_value = threshold * np.max(np.abs(audio_data))
    denoised_data = pywt.threshold(audio_data, value=threshold_value, mode='soft')
    
    soundfile.write(output_audio_path, denoised_data, rate)

# Example usage

input_video_path = "Orson Welles Audio.mp4"
output_audio_path_extracted = "Extracted_Orson_Welles_Audio.wav"
output_audio_path_denoised = "Denoised_Orson_Welles_Audio.wav"

# Extract audio from video

extract_audio(input_video_path, output_audio_path_extracted)

# Denoise the extracted audio

denoise_audio(output_audio_path_extracted, output_audio_path_denoised, threshold=0.2)

It should extract the audio, denoise it, and put the new audio in a file but it gets stuck on the same error.

TypeError: arrays to stack must be passed as a "sequence" type such as list or tuple.

I can't see where the mistake is can anyone point it out? I tried changing the file types but it didn't help.