Getting Vertical lines while plotting multiple line plots in dash

[arham2121]

Hi,
I’m facing issue with mutiple line plot in Dash, actually it is showing some unnecessary vertical line sometime opposite to my data.
I’m adding the code and image below.

cols = ['col1', 'col2']
m_data = [
            {
                'x': data['date'],
                'y': data[col],
            }
            for col in cols[:2]
        ]

        return {"data": m_data, layout={} }