The Beaver Builder Power Pack Post Grid has empty links which are flagged for accessibility. This function maps the post's title to an aria label.

pp_post_grid_a11y.js

function ppPostAria() {
    let links = document.querySelectorAll('.pp-post-link');
    let titles = document.querySelectorAll('.pp-content-grid-title');

    for (let i = 0; i < links.length; i++) {
        let title = titles[i].innerText;
        links[i].setAttribute('aria-label', title);
    }
}

if (document.querySelectorAll('.pp-content-post-grid').length !== 0) {
    ppPostAria();
}