Node-Red Home assistant

Good evening.
My name is Sébastien and I am new to residential home automation.
I installed Home Assistant on my Synology NAS with a Conbee2 USB key.
I have access to my Home assistant interface without problem.
I set up Nod-Red, no worries.
Configuration was not a problem.
But I can’t access NOD Red.
The page states; 401: Unauthorized.
Can you help me?
Thank you all
Great evening
Sébastien

I believe Home Assistant runs Node-RED in it's own container in a managed way, as such you will do better asking for help in the Home Assistant community as they will be best placed to help you.