RuBackup. Ошибки "use_private_key_file: Permission denied" и "Primary/secondary servers don't response"

Exception during creating connection: use_private_key_file: Permission denied (system library, fopen) [asio.ss1:3355!
Exception during creating connection: use_private _key.
file: Permission denied (system library, fopen) [asio.ssl:33558
Primary and secondary servers don't response. Can't complete request
Failed to perform request to server
toring
Error occurred while getting client alive timeout
Error connecting to server.
Failed to get timeout