请问添加ssl证书一直报错如何解决

twlight

nginx: [emerg] cannot load certificate "/usr/local/nginx/conf/ssl/a.com.pem": BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen('/usr/local/nginx/conf/ssl/a.com.pem','r') error:2006D080:BIO routines:BIO_new_file:no such file)
nginx: configuration file /usr/local/nginx/conf/nginx.conf test failed
Reload Nginx......
nginx: [emerg] cannot load certificate "/usr/local/nginx/conf/ssl/a.com.pem": BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen('/usr/local/nginx/conf/ssl/a.com.pem','r') error:2006D080:BIO routines:BIO_new_file:no such file)

licess

证书文件都不存在肯定报错