urgent help on PT8.57.06 upgrade

We just upgraded our tool from 8.55.21 to 8.57.06 and got the error below when passed Securauth and logged into PS:

Caught Exception: Java Exception: java.lang.Exception: Failed to decode ciphertext. Unable to retrieve decryption key. Invalid version.: during call of psft.pt8.pshttp.PSCipher.decodePassword.

The code is like this -

         &encryptedUserId = %Request.GetCookieValue("PSLOGIN");

        

         Local JavaObject &jobj = GetJavaClass("psft.pt8.pshttp.PSCipher");

         &decryptedUserId = &jobj.decodePassword(&encryptedUserId);       /*Exception happened in this line of decodePassword method*/

I am not a PSAdmin and wondering how can we figure out if this psft.pt8.pshttp.PSCipher is correct or not and has the correct version?