Error at <.Content> while upgraded from learn to relearn theme in hugo 0.129.0v

I am not sure, what you are doing. content-resursive.html is not part of the Relearn distribution.

This is most likely due to infinite recursion.

Increasing the timeout here will most likely not solve your issue but only increase the time you will wait to see this error again.

Without seeing your repo, it’s impossible to help you.