Solution:

It looks issue is due to older version of phpMyAdmin. The version of phpMyAdmin is older before the release of PHP 7.3 and it not properly compatible with that. In order to resolve, we recommend to upgrade the phpMyAdmin version. But you can make changes in sql.lib.php to temporarily resolve this error. All done. The error message should disappear now.

Issue with phpMyAdmin and PHP Warning in libraries sql lib php 613 count Parameter must be an array or an object that implements Countable TecAdmin - 26Issue with phpMyAdmin and PHP Warning in libraries sql lib php 613 count Parameter must be an array or an object that implements Countable TecAdmin - 22