Slim Application Error

The application could not run because of the following error:

Details

Type: ErrorException
Code: 2
Message: session_start(): Session cannot be started after headers have already been sent
File: /home2/dhakawhu/agilitize.dhakadsoft.com/vendor/slim/slim/Slim/Middleware/SessionCookie.php
Line: 120

Trace

#0 [internal function]: Slim\Slim::handleErrors(2, &
#039;session_start()...&
#039;, &
#039;/home2/dhakawhu...&
#039;, 120)
#1 /home2/dhakawhu/agilitize.dhakadsoft.com/vendor/slim/slim/Slim/Middleware/SessionCookie.php(120): session_start()
#2 /home2/dhakawhu/agilitize.dhakadsoft.com/vendor/slim/slim/Slim/Middleware/SessionCookie.php(109): Slim\Middleware\SessionCookie->loadSession()
#3 /home2/dhakawhu/agilitize.dhakadsoft.com/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\SessionCookie->call()
#4 /home2/dhakawhu/agilitize.dhakadsoft.com/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()
#5 /home2/dhakawhu/agilitize.dhakadsoft.com/index.php(2105): Slim\Slim->run()
#6 {main}