nginx: [emerg] BIO_new_file("/etc/letsencrypt/live/wpms.at/fullchain.pem") failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen('/etc/letsencrypt/live/wpms.at/fullchain.pem','r') error:2006D080:BIO routines:BIO_new_file:no such file)
the fullchain.pem was somehow not there anymore. cannot even find it somewhere else. and now i don´t know how to reinstall the cert, as i cannot get nginx running anymore without the cert.
OS: Ubuntu 16.04.4 LTS
root acess: available
control panel: easy engine (which is no real control panel)
cannot start nginx due to missing cert (file: /etc/letsencrypt/live/wpms.at/fullchain.pem). cannot renew cert due to not running nginx.