Create a new chart in Datawrapper and copy & paste your dataset. Datawrapper can work with all kinds of data, from Excel or Google Sheets to CSVs or just a pasted table. For example, this dataset powers the chart above:
As you can see, the dataset contains one column per column in the chart, and one row per area in the chart. For stacked column charts, your data should follow this format. Copy the dataset into the upload field in Datawrapper, and click Upload and continue.