I do have the same issue so what do I want to do:
In my Testing project I have a variables which are logging correctly to SQLite (Logging_Var_0 && Logging_Var_1) now I would like to generate a CSV file with these tags and I use the following code for this

I have also tried swapping the let end / let start

export async function Button_6_OnDown(item, x, y, modifiers, trigger) {
 let timeStamp = new Date().toLocaleDateString().replace(/\//g, "_");
 let fileName = "Export_" + timeStamp + ".csv";
 let path = "C:\\Users\\Public\\TagLogFilee.txt" + fileName; //       "X:\\614\\" USB stick path
 let delimiter = ",";
 let end = new Date();
 let start = new Date(end.getTime() - 1000 * 60 *60 * 24);
 
 let CSVData = "Time Stamp" + delimiter + "Tag name" + delimiter + "Value" + "\n";

 let logTagSet = HMIRuntime.TagLogging.CreateLoggedTagSet([
   "Logging_Var_0",
   "Logging_Var_1"
 ]);

 try {
   let loggedTagsMatrix = await logTagSet.Read(start, end, 0);

   for (let loggedTag of loggedTagsMatrix) {
     for (let loggedTagValue of loggedTag.Values) {
       CSVData += new Date(loggedTagValue.TimeStamp).toISOString() + delimiter + loggedTag.Name + delimiter + loggedTagValue.Value + "\n";
     }
   }

   await HMIRuntime.FileSystem.WriteFile(path, CSVData, "utf8");
   HMIRuntime.Trace("Write file finished successfully: " + path);
 } catch (errorCode) {
   HMIRuntime.Trace("Write failed. Error code: " + errorCode);
 }
}

and the CSV file which is generated gives the following result

Row1 == Time Stamp,Tag name,Value

Row2 == 1601-01-01T00:00:00.000Z,HMI_RT_2::Logging_Var_0 ,null
Row3 == 1601-01-01T00:00:00.000Z,HMI_RT_2::Logging_Var_1,null

Would someone know what to change  to get this working?

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Split from Data logging to csv.