When I selected nftables, it didn't create rules automatically, so I had to manage the firewall rules manually.
The following is the error message:
internal:0:0-0: Error: Could not process rule: No such file or directory
internal:0:0-0: Error: Could not process rule: No such file or directory
Error: netavark: nftables error: "nft" did not return successfully while applying ruleset