The command \degree is defined in siunitx package. This conflicts with the degree title \degree defined in the class file. The issue is not observed when using it inside \SI or \si, for eg., \SI{5}{\degree} or 5\si{\degree}. However, when using it like 10\degree, LaTeX prints out only 10, because \degree defined in the class file prints nothing, if the required argument is empty.
The command
\degreeis defined in siunitx package. This conflicts with the degree title \degree defined in the class file. The issue is not observed when using it inside \SI or \si, for eg.,\SI{5}{\degree}or5\si{\degree}. However, when using it like10\degree, LaTeX prints out only 10, because\degreedefined in the class file prints nothing, if the required argument is empty.