app.py

import gradio as gr
from TTS.api import TTS

tts = TTS(
    model_name="tts_models/multilingual/multi-dataset/xtts_v2",
    progress_bar=False,
    gpu=False
)

def generate(text):
    out = "output.wav"
    tts.tts_to_file(
        text=text,
        speaker_wav="speaker.wav",  # MUST exist
        language="en",
        file_path=out
    )
    return out

demo = gr.Interface(
    fn=generate,
    inputs=gr.Textbox(label="Text"),
    outputs=gr.Audio(type="filepath")
)

demo.launch(server_name="0.0.0.0", server_port=7860)