This error message indicates that you are trying to send data to a server that is expecting a certain number of bytes, but you are sending more data than the expected value. The most common cause of this error is when you are sending data that is too large for the server to handle. To fix this error, you should make sure that the data you are sending is not too large for the server to handle. You can check the server's documentation to determine what the maximum allowed data size is, and make sure that you are not sending more data than that. If you are still having trouble, you may need to check the server's logs to see if there are any error messages that could be causing the problem. You can also try sending the data again to see if the error persists.