button do not have accessible name code example
Example: button accessible name html
<button class="btn" aria-label="Right Align">
<span class="material-icons" aria-hidden="true">format_align_right</span>
</button>
<button class="btn" aria-label="Right Align">
<span class="material-icons" aria-hidden="true">format_align_right</span>
</button>