Update play_error.md

TouXin

2022-11-03 6e5f04b36859a34900f40b0cbec7e9aa0ff250ea

 src/main/java/com/genersoft/iot/vmp/gb28181/utils/XmlUtil.java

@@ -298,6 +298,7 @@
            }else {

                deviceChannel.setParentId(parentId);

            }

            // 兼容设备通道信息中自己为自己父节点的情况

            if (deviceChannel.getParentId().equals(deviceChannel.getChannelId())) {

                deviceChannel.setParentId(null);

            }