I found a problem when I changed HEADER_ROW_POSITION
The reason may be at line 278
var headersRange = sheet.getRange(1, FIRST_COLUMN_POSITION, HEADER_ROW_POSITION, sheet.getMaxColumns());
It should be
var headersRange = sheet.getRange(HEADER_ROW_POSITION, FIRST_COLUMN_POSITION,1, sheet.getMaxColumns());
Please confirm then fix it if I correct