[Mashiro]

Thanks @Hidden Refuge , logging in problem has been solved but now it is showing another error.

On searching on google I found a method.i have tried replacing that line but still showing error.

https://devanswers.co/problem-php-7-2-ph...sql-count/

You installed phpMyAdmin through the package manager of your Linux distribution?

If so. That might be the issue. It most likely is a version that is older and doesn't work with latest PHP 7.2/7.3.

Eitherway phpMyAdmin is a unzip, configure and use application. So you should uninstall the one you installed through the package manager. Download a copy of the latest version from their website, unzip it, move the folder to the web folder where you host your site, rename config.sample.inc.php to config.inc.php and open the file to edit the blowfish secret for the authentication cookie. After that it should work. I use the latest PMA with Nginx mainline, PHP 7.3 and MariaDB 10.1.

phpMyAdmin Installation on any webserver/Linux OS: https://freevps.us/thread-4288.html (you only need step 1 to 6)

For the blowfish secret I recommend this site: http://www.passwordtool.hu/blowfish-pass...-generator

It is quite easy. I don't understand why people install outdated versions with package managers... It's so pointless. It's a web application like Wordpress and etc. You are supposed to always install the latest version yourself within a few steps.