I can't log in to the game

Mafusail79#5388. I played in Poem 2 without thinking twice, I just couldn't log in to the game. I specially installed the game on steam and the message "failed to deserialize the package with pid 60" always appears first in the game. What's the matter? How do I continue playing? and I also want to know what is the current version of the game client? I get version 0.2.1b first.