if the anon who made the epub for I Don't Want To Be A Villainess is around could you check on something?

I was doing the usual cleanups (adding images, fixing names and TOC etc) and noticed a few of the chapters have random gibberish strings in them, specifically most of the R19 chapters in the villainess's mother SS and beyond. For example Chapter 345 has
>R2tmWkdCaGx2czRYV2RSdE12VWIzQno3ejNuZFR3ZGFlQ2QxRFQ2aVg5TFlvTzRhd0o5d0xXelM1RnQ3cUNEUw
appear randomly in the middle of the chapter. Chapters 353, 369, 370, 410, 412, 420 all have similar gibberish.

I assume this might be related to the free AI sperging out and refusing to translate mother-daughter yuri although some of the chapters don't actually contain mother-daughter yuri. If it's OK would you be able to double check and make sure that the gibberish strings are just extras and there isn't any missing text? Thanks in advance.