failed to set private key - SSL_use_PrivateKey() failed

[benbyr]

We're running into an issue with a single subdomain that's pointing to our autossl instances, we're using redis for storage:

auto-ssl: failed to set certificate for status.example.com - using fallback - failed to set private key - SSL_use_PrivateKey() failed

This site is using CloudFlare however proxy is disabled. When trying to access the site I get "ERR_SSL_VERSION_OR_CIPHER_MISMATCH" it dosen't try to generate the certificate at all.

Does anyone have any idea how to fix this?