Need help with this if anyone could help and if you want to team viewer send me a pm or I can pm you it.
Spoiler for error:
Exception in thread "main" java.lang.IllegalArgumentException: input == null!
at javax.imageio.ImageIO.read(ImageIO.java:1388)
at com.rsps.ClientFrame.load(ClientFrame.java:73)
at com.rsps.Client.start(Client.java:3608)
at com.rsps.Client.main(Client.java:3603)

Spoiler for image read:

public static BufferedImage read(URL input) throws IOException {
if (input == null) {
throw new IllegalArgumentException("input == null!");
}

InputStream istream = null;
try {
istream = input.openStream();
} catch (IOException e) {
throw new IIOException("Can't get input stream from URL!", e);
}
ImageInputStream stream = createImageInputStream(istream);
BufferedImage bi;
try {
bi = read(stream);
if (bi == null) {
stream.close();
}
} finally {
istream.close();
}
return bi;
}