selectlanguage command changed
Changed \selectlanguage[Sprache] to \selectlanguage{Sprache}. Tested on TeXstudio 2.12.22+debian-1build1 with TexLive 2019.20200218 on 5.8.0-36-generic #40~20.04.1-Ubuntu.
Changed \selectlanguage[Sprache] to \selectlanguage{Sprache}. Tested on TeXstudio 2.12.22+debian-1build1 with TexLive 2019.20200218 on 5.8.0-36-generic #40~20.04.1-Ubuntu.