Clear button on calendar Emberjs

问题

Adding a clear button for a calendar but I keep receiving "Nothing handled the action" Here is the .hbs file

<button class ="clearBtn" {{action "clear"}}> Clear </button>

.js controller file

   actions: {
      clear(){
          this.set(true, '')
        }
      },

What am I missing for the action to be called?

来源：https://stackoverflow.com/questions/62471945/clear-button-on-calendar-emberjs