How to prevent callback if there is no input from user but it clicked the submit button?

Dash Python
1

I want to prevent callback to happen if there is no input in text area and user clicked the submit button because I tried use condition if text is None raise PreventUpdate but looks like it is not working.
Attaching the gif:
webm

Code:

@app.callback(
    [Output("output-state", "children"), Output("token", "children")],
    [Input("submit-button", "n_clicks")],
    [
        State("input_text", "value"),
        State("slider", "value"),
        State("drop-down", "value"),
        State("slider-2", "value"),
    ],
    prevent_initial_call=True,
)
def label_prediction(num_clicks, text, threshold_value, preprocess_func, label_value):
    if text is None or num_clicks is None:
        raise PreventUpdate
    else:
        dict_params = {param: True for param in preprocess_func}
        preprocess_text = preprocess(text, **dict_params)
        transformed_text = tfidf.fit_transform([preprocess_text])
        prediction = classifier.predict_proba(transformed_text)
        result = get_tags(prediction[0], threshold_value, label_value)
        final_result = ", ".join(e for e in result)
        tokens = preprocess_text.split(" ")
        final_tokens = ", ".join(f for f in tokens)
        # print(preprocess_text)
        print(final_result)
        if len(result) < 1:
            return (
                dbc.Alert(
                    dcc.Markdown(
                        "**😔 Looks like I can't find any Tags...Try decreasing the Threshold value**"
                    ),
                    color="warning",
                    duration=120000,
                    style={
                        "position": "fixed",
                        "height": "15%",
                        "width": "24.5%",
                        "margin-left": "32%",
                        "margin-top": "20px",
                        "box-shadow": "5px 5px 5px  #cacfd2",
                        "margin-right": "5%",
                    },
                ),
                final_tokens,
            )
        else:
            return (
                dbc.Alert(
                    [html.H6("Predicted Tags:"), html.Hr(), final_result],
                    color="success",
                    duration=120000,
                    style={
                        "position": "fixed",
                        "height": "15%",
                        "width": "24.5%",
                        "margin-left": "32%",
                        "margin-top": "20px",
                        "box-shadow": "5px 5px 5px  #cacfd2",
                        "margin-right": "5%",
                        "overflow-y": "scroll",
                    },
                ),
                final_tokens,
            )