Prevent commands run from console crashing the entire instance

proxy/src/main/java/com/velocitypowered/proxy/console/VelocityConsole.java

@@ -68,9 +68,13 @@ public final class VelocityConsole extends SimpleTerminalConsole implements Comm
 
     @Override
     protected void runCommand(String command) {
+        try {
             if (!this.server.getCommandManager().execute(this, command)) {
                 sendMessage(TextComponent.of("Command not found.", TextColor.RED));
             }
+        } catch (Exception e) {
+            logger.error("An error occurred while running this command.", e);
+        }
     }
 
     @Override