Hey @athenalras, thanks for the reproduction steps, are you able to upload the save file or the full stonehearth.log file?
From your description and the log this does seem to be related to water in some way, but I do not remember seeing this type of error before.
As @Simica_Na pointed out, this error has been seen before…
I am going to page @8BitCrab and @SteveAdamo for this to be merged.
Also, this needs a bug report category…