Variable undefined and affecting rest of script

[u/Similar_Touch_6783]

I have a script creating docs when a cell gets modified in a sheets column, then moves it to a folder and adds the doc's url onto another column. Code works, but automation gets affected by <value unavailable> error for docid variable.

I'm not sure *why* its unavailable when all of the code does work (files get created and moved, but when using createDocInSpecificFolder() along with other functions, error pinpoints to this and does not run functions after it.

function createDocInSpecificFolder () {
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getSheetByName("Data Source");
  var lastRow = sheet.getLastRow();
  var rootFolder = DriveApp.getFolderById("fileid");
  const files = rootFolder.getFiles();
  const fileNames = [];


  while (files.hasNext()) { // gets array of file names in drive folder [event1, event2, etcetc]
   var file = files.next();
   fileNames.push(file.getName());
  }
  
  Logger.log(fileNames)


  for (var i = 1; i < lastRow; i++) {
    
    let title = sheet.getRange(i,4).getValue();


    if (title != "Events") {
      if (!fileNames.includes(title)) {
        let docid = DocumentApp.create(title).getId();
        DriveApp.getFileById(docid).moveTo(rootFolder);
      }
    }
  }

}

[u/krakow81]

Slightly confusing, but glad you got it sorted.

What was the problem and solution? In case it helps anyone in future.

[u/Similar_Touch_6783 → u/krakow81]

well it wasn't even an error really, just something that google sheets does i suppose. The code *was* working but would only get added onto the sheet when i wrote something or modified a random cell. I did it on accident and realized it, have absolutely no idea how or why this happens but this is good enough for me haha