[Vuejs]-Unable to clear selected checkbox label in Vuejs?

You don’t need to bind the v-model to an index of the checkboxes array.

Try changing it from

v-model="checkboxes[0]" // also checkboxes[1], checkboxes[2], etc

to

v-model="checkboxes"

Vue automatically handles binding of checkboxes as described in the docs

If you do what you’re doing, the array becomes filled with undefined/true instead of the value of the checkboxes.

This can lead to conflicts and issues with resetting their state.