java.io.EOFException: null

This error message usually occurs when an input stream reaches the end of the file or stream being read. It means that the program has attempted to read beyond the end of the file or stream, and there is no more data to read.

To fix this error, you need to make sure that your program is reading the correct amount of data and stopping when it reaches the end of the file or stream. You can check the length of the file or stream before reading it, and use a loop to read the data in chunks until the end is reached. Additionally, you can catch this exception and handle it gracefully in your code.