Error: Method “simulate” is only meant to be run on a single node. 0 found instead. about react-updating-state-lab

[lpzraf]

To the students please do not confuse declaring a class for React with html/css.
Use <button className=

instead of class=

[maxwellbenton]

Hi @aisayo and @lpzraf,

Thank you for this feedback. We've updated this lesson to include additional information on using className instead of class, which should help prevent this issue from occuring in the future.

Thank you both for contributing!