certbot --nginx generates PR_END_OF_FILE_ERROR
问题 a Ubuntu 16.04.6 LTS VPS running nginx is presently bricked in terms of serving pages through port 443. This happened unexpectedly, I assume when a renewal kicked in automatically. Following are twice replicated steps. I removed all site definitions in sites-enabled and reduced the server to its simplest expression: one application in http mode only. The output of nginx -T is at bottom. the unencrypted pages serve as expected. I then ran sudo certbot --nginx and selected 1 for the only 3rd