Error is the opposite of perfection.
No one is perfect. Only God.
There are many kinds of sins (errors as you say)
Some are done [knowingly]
Satan is pure evil.
We are somewhere in between, striving to do what is right but failing. But with God's help, we keep trying.
But some people have given themselves over to Satan (sin). Their hearts have been hardened. We need to pray for these people, that they will repent and acknowledge their sins and hand themselves over to God.