I am getting below error when i run nginx -t, how can i fix this
also i am using the same domain for wordops backned
backend : staging.domain.com:22222
website : staging.domain.com
[emerg] 26551#26551: cannot load certificate key "/etc/letsencrypt/live/staging.domain.com/key.pem": BIO_new_file() failed (SSL: error:0200100D:system library:fopen:Permission denied:fopen('/etc/letsencrypt/live/staging.domain.com/key.pem','r') error:2006D002:BIO routines:BIO_new_file:system lib)
nginx: configuration file /etc/nginx/nginx.conf test failed