Error conecting to google API on N8N

Hello
I´m receiving an error when setting up a connection on n8n to my google sheets API.
The problem, as i ´ve digged it is that there is an OAuth Redirect URL misconfigured on my Docker
see: Connecting to Google on localhost - #6 by jtoh - Questions - n8n Community
My question is that I don´t know how to change the OAuth redirect URL or where to delete it.
When I edit app configuration I didn´t see any var like that
There is only an Additional Environment Variables which is not setted up at all
It´s empty
Do I have to first setup a variable like OAuth redirect URL with an empty value?