Google Apps Script taken over from predecessor does not work with permission error?

//* What to do when the file is opened?
// * Select the bottom row of the sheet.
// * (Because it's troublesome to scroll to the bottom every time...)
// */
function onOpen() {
  if(SpreadsheetApp.getActiveSheet().getSheetName()!=SHEET_NAME_INQUIRY){
    return;
  }

  SpreadsheetApp.getActiveSheet().setActiveSelection("B" + getLastRow("B")); 
  SpreadsheetApp.getActiveSpreadsheet().toast("Cursor moved to bottom line";
}
//
///**
// * Get bottom row
// * column —Column name
// */
function getLastRow(column){
  var lastRow=SpreadsheetApp.getActiveSheet().getMaxRows();
  var values = SpreadsheetApp.getActiveSheet().getRange(column+"1:"+column+lastRow).getValues();

  for(;values[lastRow-1]==""&lastRow>0;lastRow--){}
  return lastRow;
}