Sorry for describing issue with less info. I have just checked suitecrm.error.log file in nginx server.
It gives me following error.
2021/04/20 09:18:43 [error] 12282#12282: *11479 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined index: SweeterCalc in /var/www/html/suitecrm/modules/AOW_Actions/FormulaCalculator.php on line 108" while reading response header from upstream, client: 123.201.70.169, server: suitecrm.server.org, request: "POST /index.php HTTP/2.0", upstream: "fastcgi://unix:/var/run/php/php7.2-fpm.sock:", host: "suitecrm.server.org", referrer: "https://suitecrm.server.org/"
It says SweeterCalc is undefined. I think I need to update FormulaCalculator.php file. 
I have following line on 108th line.
$this->debugEnabled = $this->configurator->config[FormulaCalculator::CONFIGURATOR_NAME]['DebugEnabled'] == 1;