Is it an error or just info? Because there are no 19042 langauge files or updates, all still is and will be 19041.
Same as windows 10 1903 to 1909 Windows 10 2009 was an enablement package , same update tools than 2004
I would advise to first integrate the language stuff into a 19041.1 wim and next update it to the latest 19042 build, using W10UI.