    function _addOwner(bytes memory owner) internal virtual {
        _addOwnerAtIndex(owner, _getMultiOwnableStorage().nextOwnerIndex++);
    }
-        if (ownerBytes.length == 64) {
+        if (owners[i].length != 64) {
+                revert InvalidOwnerBytesLength(owners[i]);
+            }
            (uint256 x, uint256 y) = abi.decode(ownerBytes, (uint256, uint256));

            WebAuthn.WebAuthnAuth memory auth = abi.decode(sigWrapper.signatureData, (WebAuthn.WebAuthnAuth));

            return WebAuthn.verify({challenge: abi.encode(message), requireUV: false, webAuthnAuth: auth, x: x, y: y});
-        }

-        revert InvalidOwnerBytesLength(ownerBytes);
