For Sankey Diagram - Unable to resolve the error Property 'series' does not exist on type '{ load(): void; }'

Question

I was trying to implement the toggle functionality on my Sankey diagram for when the nodes are visible on click and invisible on another click. I had gone through this stackover flow link https://stackoverflow.com/questions/72552756/how-to-toggle-visible-the-highcharts-sankey-link-with-javascriptto implement my mine but everytime I end up with the same error of

Property 'series' does not exist on type '{ load(): void; }'
Property 'linksFrom' does not exist on type '{ click(): void; }'

The code I referred to is: https://jsfiddle.net/BlackLabel/sm01jtof/3/

The code I referred to is: https://jsfiddle.net/BlackLabel/sm01jtof/3/