Sorry, I ran the reportbug on my workstation running sid, where it works but has warning. See below:
The issue is in Buster/Stable: squid 4.6-2 squid-common 4.6-2 squid-deb-proxy 0.8.14+nmu2 squid-deb-proxy-client 0.8.14+nmu2 squid-langpack 20190110-1 Sid warnings: Jul 21 11:14:24 tosh squid-deb-proxy[13986]: Starting Squid Deb HTTP Proxy: squid-deb-proxy2019/07/21 11:14:24| ERROR: Can not open file /etc/squid-deb-proxy/autogenerated/allowed-networks-src.acl for reading Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Warning: empty ACL: acl allowed_networks src "/etc/squid-deb- proxy/autogenerated/allowed-networks-src.acl" Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| ERROR: Can not open file /etc/squid-deb-proxy/autogenerated/mirror- dstdomain.acl for reading Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Warning: empty ACL: acl to_archive_mirrors dstdomain "/etc/squid-deb- proxy/autogenerated/mirror-dstdomain.acl" Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| ERROR: Can not open file /etc/squid-deb-proxy/autogenerated/pkg- blacklist-regexp.acl for reading Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Warning: empty ACL: acl blockedpkgs urlpath_regex "/etc/squid-deb- proxy/autogenerated/pkg-blacklist-regexp.acl" Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Created PID file (/var/run/squid-deb-proxy.pid) Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Current Directory is / Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Creating missing swap directories Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| /var/cache/squid-deb-proxy exists Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/00 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/01 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/02 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/03 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/04 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/05 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/06 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/07 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/08 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/09 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/0A Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/0B Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/0C Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/0D Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/0E Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Making directories in /var/cache/squid-deb-proxy/0F Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Removing PID file (/var/run/squid-deb-proxy.pid) Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| gnutls_certificate_credentials destruct this=0x55bf7c9a17e0 Jul 21 11:14:24 tosh squid-deb-proxy[13986]: 2019/07/21 11:14:24| Warning: empty ACL: acl blockedpkgs urlpath_regex "/etc/squid-deb- proxy/autogenerated/pkg-blacklist-regexp.acl" Jul 21 11:14:24 tosh avahi-daemon[887]: Loading service file /services/squid-deb-proxy.service. Jul 21 11:14:24 tosh squid-deb-proxy[13986]: . Jul 21 11:14:25 tosh avahi-daemon[887]: Service "Squid deb proxy on Tosh" (/services/squid-deb-proxy.service) successfully established.