The voice note JB released with TMZ.

The voice note that he released is almost the certain thing that pissed off RR. He spends most of it apologizing to her and saying how he hopes to build their relationship (in context for the purpose of the movie imo). Overall it seems like he’s owing up to mistakes he feels he made and trying to repair the relationship. Given it is 2AM probably could have waited. I can just see RR listening to it and fuming. I’d love to know the dates and if it was before or after RR showed up on set.