It's possible that it is related to a Cali event bug, where the event triggers an infinite loop in the background that blocks the report. The absence of any error messages strongly suggests that this may be the cause. While this bug should go away by itself after a little more than a week, we can fix it sooner by editing the save file.
You can check for it by opening the save file with a decent text editor and search for "caliproposal"(use the Find/Search functionality). The save file can be located by opening the save folder through the load/save menu when in the mansion. If you find that text in your file, then search for "calireturn". If this second text does not exist, then the problem should go away when you next end the day.
Before attempting any change to the save file, create a backup as fixing typos is very difficult. To fix the issue simply change the number to the right of the "caliproposal"(probably a 1) to the sum of number to the right of "calireturn" plus 2.