Hi @ihortom, were not my credentials.
I did some more research on the reasons for this problem and found these breadcrumbs from which I applied a solution.
Origin cause of the problem
DEPRECATION NOTICE Trello API will no longer accept GET request with data in body
I found this discussion and solution to the problem applied to another version of n8n.
Solution:
apply this modification to the files of the n8n project desktop version