php 7.3 Warning

下記警告が出ます。

PHP Warning: count(): Parameter must be an array or an object that implements Countable in /home/www/vhosts/task.fukuenya.co.jp/httpdocs/wp-content/plugins/custom-field-template/custom-field-template.php on line 1977

PHP Warning: count(): Parameter must be an array or an object that implements Countable in /home/www/vhosts/task.fukuenya.co.jp/httpdocs/wp-content/plugins/custom-field-template/custom-field-template.php on line 2070

よろしくお願います。