freeradius server not running

Hi List members With ssh-keygen I have created -with password- server.pem and ca.pem. Moved them to /etc/raddb/certs. but now I've got the following errors: tls: Failed reading certificate file "/etc/raddb/certs/server.pem" tls: error:0906D06C:PEM routines:PEM_read_bio:no start line tls: error:140DC009:SSL routines:use_certificate_chain_file:PEM lib rlm_eap_tls: Failed initializing SSL context rlm_eap (EAP): Failed to initialise rlm_eap_tls /etc/raddb/mods-enabled/eap[14]: Instantiation failed for module "eap" Please bear in mind I am new here and this is the first time I going to use freeradius. A little patience is highly appreciated. What is recommended to solve this problem? Thanks in advance Peter