Internal Server Error attempting to swap Boto after Tatu passsed

[xdg]

Link to bug replay: https://jinteki.net/bug-report/a6bff956-b3b8-45fe-83ad-9662f5f41325?b=0

Description:

I got an error choosing Boto from the pick list for ice to swap after Tatu was passed. I was able to select a Tatu in hand and that worked.