Responder Error: internalerror (2)

[AndreiBrajnicov]

Hello.

Right now I'm unable to retrieve a valid ocspd response using sha2 dighest algorightm and latest available version of openca-ocspd ( v3.1.2 )

Request was performed using openssl ocsp command. Every time I'm receiving such error:
Responder Error: internalerror (2)

In the ocspd logs I see this error:

Feb 15 07:40:23 2017 GMT [12503] INFO: Connection from [192.168.99.1]
Feb 15 07:40:23 2017 GMT [12503] INFO: [http_s.c:404] [DEBUG] HTTP Content-Length: 148 bytes
Feb 15 07:40:23 2017 GMT [12503] INFO: Request for certificate serial <censored>
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:692] [DEBUG] CRL::CA [emtrust] nameHash OK
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:707] [DEBUG] CRL::CA [emtrust] issuerKeyHash OK
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:329] [DEBUG] Using the specific token for the found CA (ocspServerToken2)
Feb 15 07:40:23 2017 GMT [12503] INFO: valid certificate status [serial <censored>]
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:85] [DEBUG] Digest Algorithm For Signature: SHA256
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:98] [DEBUG] Signing Certificate:
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:99] [DEBUG] - Serial .....: <censored>
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:100] [DEBUG] - Subject ....: <censored>
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:101] [DEBUG] - Issuer .....: <censored>
Feb 15 07:40:23 2017 GMT [12503] ERROR: [pki_ocsp_resp.c:293] Can not sign OCSP response => error:00000000:lib(0):func(0):reason(0)
Feb 15 07:40:23 2017 GMT [12503] ERROR: [response.c:117] [ERROR] Failed while signing [error:00000000:lib(0):func(0):reason(0)]
Feb 15 07:40:23 2017 GMT [12503] INFO: [response.c:630] [DEBUG] OCSP Response Bytes = 5, HTTP Header Bytes = 181

But for some reasons it works for version v2.4.2 using the same config and same certificates.

I've treid to compile and build it on Centos7 and Ubuntu16.04

[aGUID]

Confirm.
I had same error.