last code forgot input and output . just here to fix that.(lets hope )

app.py

@@ -15,55 +15,52 @@ def read_pdf(file):
 
 def main():
     logging.basicConfig(level=logging.INFO)
-    with gr.Interface(fn=None, title="PDF TO SPEECH CONVERTER", layout="rows", debug=True) as iface:
-        repo_files = list_repo_files(repo_id="balacoon/tts")
-        model_files = [x for x in repo_files if x.endswith("_cpu.addon")]
-        model_name = gr.inputs.Dropdown(label="Model", choices=model_files)
-        speaker = gr.inputs.Dropdown(label="Speaker", choices=[])
+    repo_files = list_repo_files(repo_id="balacoon/tts")
+    model_files = [x for x in repo_files if x.endswith("_cpu.addon")]
+    model_name = gr.inputs.Dropdown(label="Model", choices=model_files)
+    speaker = gr.inputs.Dropdown(label="Speaker", choices=[])
 
-        def set_model(model_name_str):
-            """
-            Gets value from `model_name`, loads the model,
-            re-initializes the tts object, and gets a list of
-            speakers that the model supports and sets them to `speaker`.
-            """
-            model_path = hf_hub_download(repo_id="balacoon/tts", filename=model_name_str)
-            global tts
-            tts = TTS(model_path)
-            speakers = tts.get_speakers()
-            value = speakers[-1]
-            speaker.choices = speakers
-            speaker.value = value
+    def set_model(model_name_str):
+        """
+        Gets value from `model_name`, loads the model,
+        re-initializes the tts object, and gets a list of
+        speakers that the model supports and sets them to `speaker`.
+        """
+        model_path = hf_hub_download(repo_id="balacoon/tts", filename=model_name_str)
+        global tts
+        tts = TTS(model_path)
+        speakers = tts.get_speakers()
+        value = speakers[-1]
+        speaker.choices = speakers
+        speaker.value = value
 
-        model_name.onChange(set_model)
+    model_name.onChange(set_model)
 
-        file_input = gr.inputs.File(label="Select a PDF File", type="file")
-        text = gr.outputs.Textbox()
+    file_input = gr.inputs.File(label="Select a PDF File", type="file")
+    text = gr.outputs.Textbox()
 
-        def synthesize_audio(file, model_name_str, speaker_str):
-            """
-            Gets the selected PDF `file`, model name from `model_name`,
-            and speaker name from `speaker`. Synthesizes the audio waveform
-            from the text extracted from the PDF and returns it.
-            """
-            if file is None or file.name == "":
-                logging.info("No file selected.")
-                return None
+    def synthesize_audio(file, model_name_str, speaker_str):
+        """
+        Gets the selected PDF `file`, model name from `model_name`,
+        and speaker name from `speaker`. Synthesizes the audio waveform
+        from the text extracted from the PDF and returns it.
+        """
+        if file is None or file.name == "":
+            logging.info("No file selected.")
+            return None
 
-            text_str = read_pdf(file)
-            if len(text_str) > 1024:
-                text_str = text_str[:1024]
+        text_str = read_pdf(file)
+        if len(text_str) > 1024:
+            text_str = text_str[:1024]
 
-            global tts
-            samples = cast(TTS, tts).synthesize(text_str, speaker_str)
-            return (cast(TTS, tts).get_sampling_rate(), samples)
+        global tts
+        samples = cast(TTS, tts).synthesize(text_str, speaker_str)
+        return (cast(TTS, tts).get_sampling_rate(), samples)
 
-        audio = gr.outputs.Audio(label="Generated Audio")
+    audio = gr.outputs.Audio(label="Generated Audio")
 
-        iface.inputs = [file_input, model_name, speaker]
-        iface.outputs = audio
-        iface.fn = synthesize_audio
-        iface.launch()
+    iface = gr.Interface(fn=synthesize_audio, inputs=[file_input, model_name, speaker], outputs=audio, title="PDF TO SPEECH CONVERTER", layout="rows", debug=True)
+    iface.launch()
 
 
 if __name__ == "__main__":