Hello thanks for this report. This happened because you saved your game during a night scene rerun and these have been modified to simplify the code. If spamming the rollback button on the error page doesn't bring you back before this scene, I can't really suggest any other solution than to load a previous backup. This should not happen again in the future, but as a precaution I advise you to always save at the end of the patch, when my assistant recommends you to do so ;).