Samsung devices have moisture detection via USB-C for a long time. It does not work very reliable and many people have problems (https://ifixit.com/Antworten/

Samsung devices have moisture detection via USB-C for a long time. It does not work very reliable and many people have problems (https://ifixit.com/Antworten/Ansehen/511762/How+to+stop+the+annoying+moisture+detected+at+the+USB+charging+port https://ifixit.com/Antworten/Ansehen/511762/How+to+stop+the+...). I randomly get this error when I try to charge my S21 with my Macbook Pros charging cable.