Reporting PHP 7.x bugs

[Fri May 01 06:21:57.773408 2020] [php7:warn] [pid 20543] [client 23.244.61.17:0] PHP Warning: array_key_exists(): The first argument should be either a string or an integer in wp-content/plugins/easy-image-gallery/includes/gutenberg-block/src/init.php on line 30

root@vm912 06:24:12 > /var/log/apache2 # php -v
PHP 7.3.14-1~deb10u1 (cli)

All WP software updated to latest and greatest. ??

Running Classic editor plugin.