What does “SSL_CTX_use_PrivateKey_file” “problems getting password error” indicate in Nginx error log? [closed]

Remove the key pass phrase:

openssl rsa -in key.pem -out newkey.pem

If the certificate and the key are together:

openssl rsa -in mycert.pem -out newcert.pem
openssl x509 -in mycert.pem >>newcert.pem

Source: http://www.madboa.com/geek/openssl/#key-removepass