An unexpected docker error occurred: 500 Server Error: Internal Server Error ("unable to insert jump to DOCKER-ISOLATION-STAGE-1 rule in FORWARD chain:  (iptables failed: iptables --wait -I FORWARD -j DOCKER-ISOLATION-STAGE-1: iptables v1.8.7 (nf_tables): Chain 'DOCKER-ISOLATION-STAGE-1' does not exist
  Try `iptables -h' or 'iptables --help' for more information.
   (exit status 2))")
An exception occurred during task execution. To see the full traceback, use -vvv. The error was:  (exit status 2))")

Restart the docker service:

systemctl restart docker.service

Tested on

• Docker 20.10.12
• Debian 11