core error: polarssl_digest_not_found: RSA-SHA512

[lichenbo]

when i open the connection, the error immediately encountered:

----openVPN Start----
EVENT: CORE_ERROR polarssl_digest_not_found: RSA-SHA [ERR]
Raw stats on disconnect:
Performance stats on disconnect：
Network bytes per CPU second: 0
Tunnel bytes per CPU second: 0
---OpenVPN stop----

i downloaded it from appstore, so what's the meaning of core error? thanks

[lichenbo]

Solved it with several try.

In my ovpn file , it somehow has this line which cannot be recogonized:
auth RSA-SHA512

and deleting it makes everything well