Does anyone know what this error means and/or a fix?

Version I am playing: NWN - EE, Steam. Latest Build.
Playing “HHQ1 - Fighter’s CHallenge,” Module from the NWN vault. After I play a bit, and do some adventuring and return to the starting town, the game freezes, and I have to Task Mgr out of it…

Error as follow…

[Sat Apr 4 16:50:07] Loading Module: 000000 - quicksave\Fighter’s Challenge
GOG: Authentication failed: 2