Web Filtering Log - file filling up with Connection reset by peer Errors?

Hi All,

I am trying to understand why the Web Filtering Log is filling up with "Connection reset by peer" errors as below:

2019:04:11-10:07:06 srv-utm1 httpproxy[12221]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0xa4da300" function="ssl_raw_read" file="ssl.c" line="816" message="SSL_ERROR_SYSCALL: ret=-1 error=Connection reset by peer"

I am running a software based UTM, Firmware version: 9.601-5, Pattern version: 160494.

I recently recreated my HTTPS Proxy SSL Cert and successfully deployed using Group Policy. I have tried disabling HTTPS scanning and IPS but same errors appearing.

The web filtering log has increased hugely but users aren't reporting any issues to me. I have had no luck in searching for this error on the forums.

Any help or insight would be greatly appreciated, Thanks!