getSummaryDataAsync breaking in the latest tableau server version - tableau-2.5.0.min.js

Hello All,

I have a script where i am checking which sheets have data and which do not.

let worksheetArray = tableauViz.getWorkbook().getActiveSheet().getWorksheets();  
let promises = worksheetArray.map(function(worksheet){  
return worksheet.getSummaryDataAsync({maxRows: 1}).then(function(table) {  
    console.log(table.getData());  
  }).otherwise(function(err){  
    console.log(err);  
  });  
});  
Promise.all(promises);  

this results in a error, please find the attaches screenshot "Uncaught TypeError: Cannot read property 'toString' of undefined"

This was working in earlier versions of tableau.

Any help on how i can fix this, would be great. Thanks.