Why didn't the original god grass pupil respond?

Did not complete the task of the forest book. Among primitive gods, the grass god pupil is an important prop, and there are many grass god pupils in Sumeru area. If you want to get the magic pupil, you must complete the task of nursery world in the dream of forest book, and get a bitter prop after getting the task prop of forest book. Repair the cracked square of grass element with grass ring, and then activate it with grass element before reaction.