I removed all nodes using telegram and repclaced it with only one central node, using link nodes to connect all messages to the one telegram node.
No I only recieve the error when the node is activated bij a link node.
Not every 5 seconds or so
How to select or HA or node red to set up the connection to Telegram?
It looks like that is indeed causing the problem both are creating a connection
EDIT:
I removed my telegram bot settings in HA configuration.
And only using nodered settings in the telegram node.
No error and Telegram in Nodered is still sending messages.
Only Telegram is not part of my all-Notify is not sending telegram any more: