Welcome to the forum.
Please stop node red and start it again in a command window and post the full output here.
Can you copy and paste the whole text from node red startup ?
7 Jun 16:44:06 - [info] Server now running at http://127.0.0.1:1880/
7 Jun 16:44:06 - [info] Starting flows
7 Jun 16:44:06 - [info] [ui-base:ui_template] Node-RED Dashboard 2.0 (v1.24.2) started at /dashboard
7 Jun 16:44:06 - [info] [ui-base:ui_template] Created socket.io server bound to Node-RED port at path /dashboard/socket.io
7 Jun 16:44:06 - [info] Started flows
7 Jun 16:45:04 - [info] [ui-base:ui_template] Disconnected sjQsxxsJEefD1VXGAAAB due to transport close
7 Jun 16:45:05 - [info] [ui-base:ui_template] Disconnected sqwpSFHr9tZ01iM4AAAD due to transport close
7 Jun 16:45:05 - [info] [ui-base:ui_template] Disconnected KlQ7Ntr4BCn_nN_tAAAF due to transport close
The full log from the startup command that you type. Even knowing how you start node-red may be important.
7 Jun 20:57:03 - [info]
Welcome to Node-RED
7 Jun 20:57:03 - [info] Node-RED version: v4.0.9
7 Jun 20:57:03 - [info] Node.js version: v22.16.0
7 Jun 20:57:03 - [info] Windows_NT 10.0.26100 x64 LE
7 Jun 20:57:03 - [info] Loading palette nodes
7 Jun 20:57:06 - [info] node-red-contrib-telegrambot version: v16.2.0
7 Jun 20:57:06 - [info] Dashboard version 3.3.1 started at /ui
'C:\Users\Hafizh' is not recognized as an internal or external command,
operable program or batch file.
7 Jun 20:57:06 - [warn] rpi-gpio : Raspberry Pi specific node set inactive
7 Jun 20:57:06 - [warn] ------------------------------------------------------
7 Jun 20:57:06 - [warn] [tuya-led-node/tuya-led] ReferenceError: TuyaLedNode is not defined (line:139)
7 Jun 20:57:06 - [warn] ------------------------------------------------------
7 Jun 20:57:06 - [info] Settings file : C:\Users\Hafizh Mahmud S.node-red\settings.js
7 Jun 20:57:06 - [info] Context store : 'default' [module=memory]
7 Jun 20:57:06 - [info] User directory : \Users\Hafizh Mahmud S.node-red
7 Jun 20:57:06 - [warn] Projects disabled : editorTheme.projects.enabled=false
7 Jun 20:57:06 - [info] Flows file : \Users\Hafizh Mahmud S.node-red\flows.json
7 Jun 20:57:06 - [info] Server now running at http://127.0.0.1:1880/
7 Jun 20:57:06 - [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.
7 Jun 20:57:06 - [info] Starting flows
7 Jun 20:57:06 - [info] [ui-base:ui_template] Node-RED Dashboard 2.0 (v1.24.2) started at /dashboard
7 Jun 20:57:06 - [info] [ui-base:ui_template] Created socket.io server bound to Node-RED port at path /dashboard/socket.io
7 Jun 20:57:06 - [info] Started flows
7 Jun 20:58:45 - [info] [ui-base:ui_template] Disconnected 8YNj9oVwgtqXrUhoAAAB due to transport close
7 Jun 20:58:45 - [info] [ui-base:ui_template] Disconnected A75jnE2AyfOrX6d5AAAD due to transport close
