Properly pass connection exceptions to the logger

proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java

@@ -195,8 +195,9 @@ public class MinecraftConnection extends ChannelInboundHandlerAdapter {
           boolean isQuietDecoderException = cause instanceof QuietDecoderException;
           boolean willLog = !isQuietDecoderException && !frontlineHandler;
           if (willLog) {
-            logger.error("{}: exception encountered in {}", association, activeSessionHandler,
+            logger.atError().withThrowable(cause)
-                cause);
+                .log("{}: exception encountered in {}", association,
+                    activeSessionHandler);
           } else {
             knownDisconnect = true;
           }
@@ -226,7 +227,6 @@ public class MinecraftConnection extends ChannelInboundHandlerAdapter {
    * Writes and immediately flushes a message to the connection.
    *
    * @param msg the message to write
-   *
    * @return A {@link ChannelFuture} that will complete when packet is successfully sent
    */
   @Nullable