Need help importing certificate

I have created a CSR using `openssl req -new -newkey rsa:2048 -nodes -keyout example.com.key -out example.com.csr` and was issues a .crt by GoDaddy. Now that I try to import the key and cert using `http://example.com:9090/import-certificate.jsp` I get the following errror:

org.bouncycastle.jce.provider.JCERSAPrivateCrtKey cannot be cast to java.security.KeyPair

How do I proceed from there?