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Exception in Dash Tabs, Not allowing vertical, style

app.layout = html.Div([
html.Div(
dcc.Tabs(
tabs=[
{‘label’: ‘Descriptive Analysis’, ‘value’: 1},
{‘label’: ‘Model Fitting’, ‘value’: 2}

            ],
            value=1,
            id='tabs',
            vertical= True,
            style={
                'height': '100vh',
                'borderRight': 'thin lightgrey solid',
                'textAlign': 'left'
            }
        ),
        style={'width': '20%', 'float': 'left'}
    ),
    html.Div(
        html.Div(id='tab-output'),
        style={'width': '80%', 'float': 'right'}
    )
], style={
    'fontFamily': 'Sans-Serif',
    'margin-left': 'auto',
    'margin-right': 'auto',
})

After running, this throws error like this (Check image)

It is not allwoing Vertical, Style

There is a new version of tabs being made in https://github.com/plotly/dash-core-components/pull/213