Add one character to the very end of each narrative field and save but do not submit. Then go back in and backspace from the end of each field until you're left with the last legitimate character (probably a period). Save again, then try to submit.
I haven't seen this specific error but this general purpose fix can resolve many database corruption issues, which this appears to be. Adding and removing the character forces the field to be rewritten.
If that doesn't work, this one might but fair warning it will take forever and may do nothing. But it might save you if it's a corruption issue. One by one, cut the contents of each field to clipboard then save with the field empty. Don't cut or copy anything else until you complete the next step. Then go back in and paste back into the field using PASTE AS PLAIN TEXT only (found on the right-click menu on a PC) rather than the normal paste and resave. If you somehow acquired weird unprintable characters in your field, they should be gone now. Save again, then go back in and do the same to the next field. When all have been replaced, try again to submit.
Edited 1 time(s). Last edit at 02/16/2020 08:20PM by JustForFun.