referral.sh throwing error messages

PI-HOLE V5.8.1 FTL V5.13 WEB INTERFACE V5.10.1 running on a freshly installed on raspberry pi. Main script works fine. referral runs but throws error messages, no domains added to whitelist. Might be a pi hole bug.

pi@pihole:/opt/whitelist/scripts $ sudo ./referral.sh
  This file contains tracking and adserving domains. Run this script if you use specific service (like Slickdeals and Fatwallet etc.) that require certain adserving domains to be whitelisted. If you don't know what these services are, stay away from this list.  
Do you want to continue (Y/N)? y
  This script will download and add domains from the repo to whitelist.txt

 [ â ]  Adding domains to whitelist...
 [ â ]  Removing duplicates...
 [...]  Pi-hole gravity rebuilding lists. This may take a while
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
Error: UNIQUE constraint failed: domainlist_by_group.domainlist_id, domainlist_by_group.group_id
 [ â ]  Pi-hole's gravity updated
 [ â ]  Done!
   Buy me a coffee: https://paypal.me/anudeepND
   Star me on GitHub, https://github.com/anudeepND/whitelist
   Happy AdBlocking :)