Swift Blake2B 128 hashing mismatch

Question

I have this hex string 0x6469643a737369643a7465737432343700000000000000000000000000000000 and trying to convert via blake2b 128

Expected result: 0x017d8f165615146b5af43b037ee14db4

Using https://www.shawntabrizi.com/substrate-js-utilities/

But in code I'm getting 6a3f369054a2150757e7a4a8a6f59996

Code

    let newData = try encodedHexData.blake2b(128)
    let newHex = newData.toHexString()
    print("HEX::: ", newHex)

    func blake2b(_ size: Int) throws -> Data {
        do {
            var hasher = try Blake2(.b2b, size: size / 8)
            hasher.update(self)
            
            return try hasher.finalize()
        } catch {
            throw error
        }
    }

what should be the correct way?

Ref:

https://github.com/sublabdev/substrate-client-swift

https://github.com/soramitsu/fearless-utils-iOS