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I tried to configure nginx on my Ubuntu system. During this process, I executed the command sudo ufw allow 'Nginx HTTP and I got an error:

WARN: initcaps
[Errno 2] iptables v1.8.7 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

Skipping adding existing rule
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