Installation error ojs-3.2.1-4

if i am submitting installation page after filling all required field then next page showing blank. please help
error log showing following error:-

[Mon Sep 13 08:48:02.013871 2021] [php7:error] [pid 32166] [client 127.0.0.1:56022] PHP Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /var/www/html/ojs-3.2.1-4/lib/pkp/lib/vendor/adodb/adodb-php/drivers/adodb-mysql.inc.php:461\nStack trace:\n#0 /var/www/html/ojs-3.2.1-4/lib/pkp/lib/vendor/adodb/adodb-php/adodb.inc.php(683): ADODB_mysql->_connect()\n#1 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/db/DBConnection.inc.php(162): ADOConnection->Connect()\n#2 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/db/DBConnection.inc.php(137): DBConnection->connect()\n#3 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/db/DBConnection.inc.php(124): DBConnection->initConn()\n#4 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/db/DBConnection.inc.php(56): DBConnection->initCustomDBConnection()\n#5 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/install/PKPInstall.inc.php(77): DBConnection->__construct()\n#6 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/install/Installer.inc.php(178): PKPInstall->preInstall()\n#7 /var/www/html/ojs-3.2.1-4/lib/pkp/classes/install/form/InstallForm.inc.php(196): Installer->execute()\n#8 /var/www/html/ojs-3.2 in /var/www/html/ojs-3.2.1-4/lib/pkp/lib/vendor/adodb/adodb-php/drivers/adodb-mysql.inc.php on line 461, referer: http://localhost/ojs-3.2.1-4/index.php/index/install

Hi @shantanusingh

Please use mysqli (not mysql) for your database driver.

Best
Jason

thank you for reply, now its working and up gradation under progress but its taking too much time.