in /etc/backuppc/apache.conf adding these lines solved the issue here:
<Directory /usr/share/backuppc/cgi-bin/>
#
# 2020-01-07
# after upgrade to buster , when i tried to access the web page
for this error:
# and in /var/log/apache2/error.log
# [Tue Jan 07 16:15:37.112830 2020] [authz_core:error] [pid
20998:tid 139916814022400] [client 172.30.24.115:47886] AH01630: client
denied by server configuration: /usr/share/backuppc/cgi-bin/
# You don't have permission to access /backuppc/index.cgi on this
server.
# these 3 lines fixed the issue
#
Options Indexes FollowSymLinks
AllowOverride None
Require all granted
PS: I am not sure if that is secure, and there may be a better way to
handle the issue.
