Thanks. I put this in my server directive:

error_log logs/error.log debug;
access_log logs/access.mine.log;
log_format combined2 '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent"';


But this creates a file "access.mine.log" which is empty. And the error_log only manages to show me messages that are about the reloading of the nginx server ("[notice] 19142#0: signal process started").

What can I do?