"Invalid byte 1 of 1-byte UTF-8 sequence." error occurred

Hello? I've been testing BaseX for data backup in a Linux environment for a few months. (Some of the contents are in Japanese.) While using it a while ago, suddenly "Invalid byte 1 of 1-byte UTF-8 sequence." An error has occurred. The content of the file used was fine and was the same as before. I opened this file in VI editor and simply saved and exited. And when I ran the program again, it worked normally. - This file is a compressed xml file in gz format. - The program reads this file, takes the necessary parts, and saves them by passing them to BaseX through the PUT Method. - In this part, "Invalid byte 1 of 1-byte UTF-8 sequence." has occurred. This has been happening for a few hours and I haven't taken any action, but now it's working fine. Is there a part that uses BaseX and can explain why this is happening? Or is it a program problem? Can this problem occur using BaseX? Or is it a problem with the program or the environment? I think it's an encoding problem, but I don't know the exact cause. - The program is made in Java. - Some of the contents of reading and transmitting data are as follows. URL url = new URL(urlTemp); conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("PUT"); conn.setRequestProperty("Content-Type", "application/xml"); OutputStream out = conn.getOutputStream(); InputStream in = null; in = new GZIPInputStream(new FileInputStream(filePath)); int len = 0; byte[] readBuffer = new byte[1024];

    while ((len = in.read(readBuffer)) > 0) {

out.write(readBuffer, 0, len); }

이창우씨, As you use a URLConnection to send the data, and as you write that the problem doesn’t happen repeatedly, I assume this has been a network error. I guess that urlTemp points to a BaseX server instance and that you use our REST API? If you can, feel free to provide us with some self-contained Java code that we can try. 올림, Christian