Update play_error.md

TouXin

2022-11-03 6e5f04b36859a34900f40b0cbec7e9aa0ff250ea

 src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/CancelRequestProcessor.java

@@ -15,7 +15,7 @@
@Component
public class CancelRequestProcessor extends SIPRequestProcessorParent implements InitializingBean, ISIPRequestProcessor {

   private String method = "CANCEL";
   private final String method = "CANCEL";

   @Autowired
   private SIPProcessorObserver sipProcessorObserver;