Pod on Production

Hello, i have just installed diaspora pod on production mod and i have some problems.

My diaspora.yml:

Cert and ssl:

Nginx (the file nginx.conf is unchanged after installation, create new /etc/nginx/conf.d/diaspora.conf):

And log:

Are these warnings critical? I tried to install a later version but without success.
How can i fix it?
Or all problems on Nginx?

And one more question: if I want to link my pod to twitter do I necessarily need to production mod or I can use development?