Fatal error: Uncaught Error: Call to undefined method ScssPhp\ScssPhp\Compiler::compileString()

A few minutes back I updated my Opencart to 3.0.3.9 from 3.0.3.8.
After the upgrade admin panel is working but when we refresh the SAAS cache, it's not working. It's giving an error to open the admin panel.

Now I am getting the following error:
admin panel:
Fatal error: Uncaught Error: Call to undefined method ScssPhp\ScssPhp\Compiler::compileString() in /var/www/vhosts/nationalpc.in/httpdocs/admin/controller/startup/sass.php:17 Stack trace: #0 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php(79): ControllerStartupSass->index() #1 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/router.php(77): Action->execute() #2 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/router.php(46): Router->execute() #3 /var/www/vhosts/nationalpc.in/httpdocs/system/framework.php(169): Router->dispatch() #4 /var/www/vhosts/nationalpc.in/httpdocs/system/startup.php(104): require_once('...') #5 /var/www/vhosts/nationalpc.in/httpdocs/admin/index.php(19): start() #6 {main} thrown in /var/www/vhosts/nationalpc.in/httpdocs/admin/controller/startup/sass.php on line 17

Frontend:

homepage:
Fatal error: Uncaught Error: Call to undefined function Journal3\Utils\oc_strrpos() in /var/www/vhosts/nationalpc.in/httpdocs/system/library/journal3/utils/str.php:170 Stack trace: #0 /var/www/vhosts/nationalpc.in/httpdocs/system/library/journal3/image.php(146): Journal3\Utils\Str::utf8_strrpos() #1 /var/www/vhosts/nationalpc.in/httpdocs/catalog/controller/journal3/slider.php(179): Journal3\Image->resize() #2 /var/www/vhosts/nationalpc.in/httpdocs/system/library/journal3/opencart/modulecontroller.php(119): ControllerJournal3Slider->parseSubitemSettings() #3 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php(79): Journal3\Opencart\ModuleController->index() #4 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/loader.php(48): Action->execute() #5 /var/www/vhosts/nationalpc.in/httpdocs/catalog/controller/journal3/grid.php(239): Loader->controller() #6 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php(79): ControllerJournal3Grid->grid() #7 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/loader.php(48): Action->execute() #8 /var/www/vhosts/nationalpc.in/httpdocs/catalog/controller/journal3/event/layout.php(310): Loader->controller() #9 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php(79): ControllerJournal3EventLayout->controller_common_position_before() #10 /var/www/vhosts/nationalpc.in/httpdocs/system/engine/event.php(62): Action->execute() #11 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/loader.php(41): Event->trigger() #12 /var/www/vhosts/nationalpc.in/storage/modification/catalog/controller/common/home.php(111): Loader->controller() #13 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php(79): ControllerCommonHome->index() #14 /var/www/vhosts/nationalpc.in/httpdocs/catalog/controller/startup/router.php(25): Action->execute() #15 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php(79): ControllerStartupRouter->index() #16 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/router.php(77): Action->execute() #17 /var/www/vhosts/nationalpc.in/storage/modification/system/engine/router.php(66): Router->execute() #18 /var/www/vhosts/nationalpc.in/httpdocs/system/framework.php(169): Router->dispatch() #19 /var/www/vhosts/nationalpc.in/httpdocs/system/startup.php(104): require_once('...') #20 /var/www/vhosts/nationalpc.in/httpdocs/index.php(25): start() #21 {main} thrown in /var/www/vhosts/nationalpc.in/httpdocs/system/library/journal3/utils/str.php on line 170

product page:
Notice: Undefined property: Proxy::getLayoutId in /var/www/vhosts/nationalpc.in/storage/modification/system/engine/action.php on line 79

You need to move system/storage directory from 3.0.3.9 to your current storage directory location.

Thank you. Problem resolved.

Solved for me too. Thank you!