PHP error in last lines of naevents-admin-sub-page.php

ISSUE:
PHP Warning: Cannot modify header information – headers already sent by (output started at /home/xxx/public_html/wp-content/plugins/events-addon-for-elementor/elementor/naevents-admin-sub-page.php:311) in /home/xxx/public_html/wp-includes/pluggable.php on line 1438

RESULTS:
Login page cannot be accessed. Locked out of site admin.

SOLUTION:
Remove the last few lines in this file, from line 311 to the last closing brace. You don’t need to close the php tags. So the last few lines of this file should look like:

<?php
    }
}

AFFECTS:
The issue only appeared in the last version update 6 days ago.