[phpmyadmin] phpmyadmin - count(): Parameter must be an array or an object that implements Countable

open this file: '/usr/share/phpmyadmin/libraries/sql.lib.php'

sudo nano /usr/share/phpmyadmin/libraries/sql.lib.php

press ctrl+w to search (count($analyzed_sql_results['select_expr'] == 1)

Find: count($analyzed_sql_results['select_expr'] == 1)

Replace With:  (count($analyzed_sql_results['select_expr']) == 1)

Restart the server

 sudo service apache2 restart

moreover, If you still facing same issue then do following.

open this file /usr/share/phpmyadmin/libraries/plugin_interface.lib.php

sudo nano /usr/share/phpmyadmin/libraries/plugin_interface.lib.php

Find : if ($options != null && count($options) > 0) {

Ctrl+w : if ($options != null && count($options) > 0) {

replace with following code

if ($options != null && count((array)$options) > 0) {

now save and restart the server

sudo /etc/init.d/apache2 restart