My copy of the Player's Handbook and my copy of the Monster Manual both state that an Imp has resistance to:
[...] bludgeoning, piercing, and slashing from nonmagical weapons that aren't silvered.
And then DnD Beyond (without buying any books there) states:
[...] Bludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Silvered
Meanwhile the Player's Handbook errata states:
[...] bludgeoning, piercing, and slashing from nonmagical attacks not made with silvered weapons.
And the Monster Manual errata states:
Throughout the book, instances of “nonmagical weapons” in Damage Resistances/Immunities entries have been replaced with “nonmagical attacks.”
Applying this exact update would make my book state:
[...] bludgeoning, piercing, and slashing from nonmagical attacks that aren't silvered.
This matches DnD Beyond's description but "attacks that aren't silvered" sounds very off/wrong to me. I have no idea if this wording actually exists in the printings of the Monster Manual, it is just what the errata states.
Which of these wordings, if any, is correct; what is the wording in more/most recent printings of the Monster Manual? If this wording conflicts with the Player's Handbook errata, which one takes precedence?