我不太确定是哪个节点导致了此行为，并且流量太多，因此无法从头开始安装，是的，我没有备份。 我今天早上意识到，我无法再在raspberrypi零上访问节点实例的http gui。只是编辑了一些流程，但没有真正严重的问题。
我试图在Rapsberry PI zere上以红色启动节点，并且没有GUI和UI正在启动以访问红色节点实例。我不知道该如何解决和排除故障。我正在或试图做的是：
pi@nodered-pi:~/.node-red $ node-red-start
Start Node-RED
Once Node-RED has started, point a browser at http://192.168.1.42:1880
On Pi Node-RED works better with the Firefox or Chrome browser
Use node-red-stop to stop Node-RED
Use node-red-start to start Node-RED again
Use node-red-log to view the recent log output
Use sudo systemctl enable nodered.service to autostart Node-RED at every boot
Use sudo systemctl disable nodered.service to disable autostart on boot
To find more nodes and example flows - go to http://flows.nodered.org
Starting as a systemd service.
Started Node-RED graphical event wiring tool.
19 Aug 15:13:55 - [info]
Welcome to Node-RED
===================
19 Aug 15:13:55 - [info] Node-RED version: v0.18.7
19 Aug 15:13:55 - [info] Node.js version: v8.11.1
19 Aug 15:13:55 - [info] Linux 4.14.52+ arm LE
19 Aug 15:14:06 - [info] Loading palette nodes
19 Aug 15:14:37 - [info] Dashboard version 2.9.6 started at /ui
19 Aug 15:14:49 - [warn] ------------------------------------------------------
19 Aug 15:14:49 - [warn] [node-red-contrib-delta-timed/delta-time] 'delta' already registered by module node-red-contrib-change-detect
19 Aug 15:14:49 - [warn] ------------------------------------------------------
19 Aug 15:14:49 - [info] Settings file : /home/pi/.node-red/settings.js
19 Aug 15:14:49 - [info] User directory : /home/pi/.node-red
19 Aug 15:14:49 - [warn] Projects disabled : set editorTheme.projects.enabled=true to enable
19 Aug 15:14:49 - [info] Flows file : /home/pi/.node-red/flows_nodered-pi.json
19 Aug 15:14:50 - [info] Server now running at http://127.0.0.1:1880/
19 Aug 15:14:50 - [warn]
---------------------------------------------------------------------
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.
---------------------------------------------------------------------
19 Aug 15:14:50 - [warn] Error loading credentials: SyntaxError: Unexpected token T in JSON at position 0
19 Aug 15:14:50 - [warn] Error loading flows: Error: Failed to decrypt credentials
19 Aug 15:14:51 - [info] Starting flows
19 Aug 15:15:01 - [warn] [telegram receiver:Telegram Receiver] bot not initialized
19 Aug 15:15:01 - [warn] [telegram sender:Temperatur Wetterstation] bot not initialized.
19 Aug 15:15:01 - [error] [function:Versorge mit Information] SyntaxError: Invalid or unexpected token
19 Aug 15:15:01 - [info] Started flows
19 Aug 15:15:02 - [info] [sonoff-server:166ef3ba.0029bc] SONOFF Server Started On Port 1080
19 Aug 15:15:02 - [red] Uncaught Exception:
19 Aug 15:15:02 - Error: listen EACCES 0.0.0.0:443
at Object._errnoException (util.js:1022:11)
at _exceptionWithHostPort (util.js:1044:20)
nodered.service: Main process exited, code=exited, status=1/FAILURE
nodered.service: Unit entered failed state.
nodered.service: Failed with result 'exit-code'.
nodered.service: Service hold-off time over, scheduling restart.
Stopped Node-RED graphical event wiring tool.
Started Node-RED graphical event wiring tool.
19 Aug 15:15:20 - [info]
Welcome to Node-RED
===================
19 Aug 15:15:20 - [info] Node-RED version: v0.18.7
答案 0 :(得分：1)
19 Aug 15:15:02 - Error: listen EACCES 0.0.0.0:443
at Object._errnoException (util.js:1022:11)
at _exceptionWithHostPort (util.js:1044:20)
此错误表示端口443上已在运行其他设备。这可能是Node-RED的现有副本或其他设备。您可以使用以下命令搜索哪些应用程序正在侦听哪些端口
lsof -i :443
这将列出在端口443上监听的内容