title: How to import EXCEL file in angular using exceljs
body: <p>I want to read excel file using angular code.
  my file is stored somewhere in my local system e.g, C:/data/test.xlsx</p>
  
  <p>I have already tried loading with 
  readFile() &amp; load() methods of exceljs.</p>
  
  <p>they fail to read anything, instead they give error</p>