[squid-users] Error on negotiating SSL connection

[Job]

Hello,

i can intercept SSL Bumped connection actually.

But in squid logs i have this error, and clients disolay a squid error page.

These are the logs:

 fwdNegotiateSSL: Error negotiating SSL connection on FD 20: error:0D0C50A1:asn1 encoding routines:ASN1_item_verify:unknown message digest algorithm (1/-
2015/10/07 12:12:48 kid1| WARNING: ssl_crtd #Hlpr0 exited
2015/10/07 12:12:48 kid1| Too few ssl_crtd processes are running (need 5/100)
2015/10/07 12:12:48 kid1| Starting new helpers
2015/10/07 12:12:48 kid1| helperOpenServers: Starting 5/100 'ssl_crtd' processes

How can i resolve this?

Thank you
Francesco