Exported PDF is blank if merge and export functions are run from the same Apps Script function

Question

I have code that combines several Google Docs into one file, and code to save a Doc as PDF:

function createPDF(docId) {
  var docFile = DriveApp.getFileById(         


        

Answer 1

I think that happening because you're not saving and closing the docs.

Check this out https://developers.google.com/apps-script/reference/document/document#saveandclose

And try closing your doc at the end of the mergeDocuments function.

tehhowch have explained this in comment also, some credit goes to him too. :)