How to solve problem with ssl in icecast-kh?

Question

icecast

Hello! I'm trying to make icecast open via https, but there was a problem with the certificate.
I generate like this:

openssl req -new -newkey rsa:2048 -days 365 -nodes -x509 -keyout key.pem -out /usr/local/share/icecast/key.pem

The error that is in the logs:

[2016-12-09  22:20:08] WARN connection/get_ssl_certificate Invalid private key file /usr/local/share/icecast/key.pem
[2016-12-09  22:20:08] WARN connection/get_ssl_certificate failed to load cert /usr/local/share/icecast/key.pem (PEM lib)
[2016-12-09  22:20:08] INFO connection/get_ssl_certificate No SSL capability on any configured ports

What put me more into a stupor - everything works on the VDS, but not on the dedicated one. Configs are the same, collected the same way.
Thank you!