Error in OPC-UA when I start Node-red

Hello, So, I have this error when I start node-red, I am experimenting connecting UAExpert with node-red like this video:

I don´t know what to do to solve this problem.  
>   
> Thanks for your help

Hi, please have a look at my response to a similar problem here: https://www.plcnext-community.net/en/discussions-2-offcanvas/node-red-stops-working-when-i-want-to-connect-to-opc-ua.html