When visiting an affiliate link for a client, the following error is produced:

Something went wrong.
session_set_save_handler(): Cannot change save handler when session is active on line 43 in /home/blestacp/public_html/vendors/minphp/session/src/Session.php

Printing Stack Trace:
#0 [internal function]: UnknownException::setErrorHandler(2, 'session_set_sav...', '/home/blestacp/...', 43, Array)
#1 /home/blestacp/public_html/vendors/monolog/monolog/src/Monolog/ErrorHandler.php(172): call_user_func(Array, 2, 'session_set_sav...', '/home/blestacp/...', 43, Array)
#2 [internal function]: Monolog\ErrorHandler->handleError(2, 'session_set_sav...', '/home/blestacp/...', 43, Array)
#3 /home/blestacp/public_html/vendors/minphp/session/src/Session.php(43): session_set_save_handler(Object(Minphp\Session\Handlers\NativeHandler), false)
#4 /home/blestacp/public_html/plugins/order/order_controller.php(91): Minphp\Session\Session->__construct()
#5 /home/blestacp/public_html/plugins/order/controllers/forms.php(82): OrderController->setAffiliateCode('MQ==')
#6 /home/blestacp/public_html/vendors/minphp/bridge/src/Lib/Dispatcher.php(142): Forms->a()
#7 /home/blestacp/public_html/index.php(21): Dispatcher::dispatch('/order/forms/a/...')
#8