dash应用程序无法创建一个Y轴条形图格式

import dash
import dash_core_components as dcc
import dash_html_components as html
from dash.dependencies import Input, Output

app = dash.Dash(__name__)

app.layout = html.Div(
    children=[
        dcc.Graph(
            id='bar-chart',
            figure={
                'data': [
                    {'x': ['Category 1', 'Category 2', 'Category 3'], 'y': [10, 20, 30], 'type': 'bar', 'name': 'Data'}
                ],
                'layout': {
                    'title': 'Y-axis Bar Chart',
                    'yaxis': {'title': 'Values'},
                    'xaxis': {'title': 'Categories'}
                }
            }
        )
    ]
)

if __name__ == '__main__':
    app.run_server(debug=True)