HiHi, Googs here. I watched someone play the new update today as well as trying replicating this error through speedrunning the whole thing multiple times without any success.
The error in question is due to the script not being able to fetch the required image. In practice this means that A. This could've been a temporary error.
B. Your download was corrupted.
C. Something got moved around while you were editing the game files.
In this case, I highly suggest you to redownload our build and try again. In case the error persist, please let us know^^