Dash error for app.callback for submitting everything and dropdown list

Why can’t we use Categories and value if the formation of it is different than for my submitting for everything callback?
Does anyone have a fix for this?

#Callback for dropdown menu
@app.callback(dash.dependencies.Output('dd-output-container', 'children'),[dash.dependencies.Input('Categories', 'value')])
def update_output_dropdown(value):
    return 'You have selected "{}"'.format(value)

#Callback for submitting everything.
@app.callback(Output('target', 'children'), Input('submit', 'n_clicks'), Input('Categories', 'value: (sheet_name, dfs)'))
def callback(n_clicks, dfs, value):
    if (n_clicks != 0):
    return calculation