问ReferenceError:未定义偏移量

EN

function updateCells() {
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var spreadsheetSummary = ss.getSheetByName('Summary');
  const range = spreadsheetSummary.getDataRange()
  const values = range.getDisplayValues()
  const transposeCheck = values[0].map((_, iCol) => values.map(row => row[iCol]).some(cell => cell))
  var countBoolean = transposeCheck.filter(Boolean).length + 1
  var spreadsheetCommunityGroups = ss.getSheetByName('Community Groups');
  var cellValueCommunityGroups = spreadsheetCommunityGroups.getRange('A12').getValue();
  var summaryCommunityGroups = OFFSET('A2', 0, countBoolean); 
  sreadsheetSummary.getRange(summaryCommunityGroups).setValue(cellValueCommunityGroups);
}