Slim Application Error

The application could not run because of the following error:

Details

Type: ValueError

Message: explode(): Argument #1 ($separator) cannot be empty

File: /home/marusho-rental/www/haregi-rental.com/app/common/task/Util.php

Line: 379

Trace

#0 /home/marusho-rental/www/haregi-rental.com/app/common/task/Util.php(379): explode()
#1 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/public/pages/itemdetail.phtml(421): Util::set_webp_file()
#2 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/php-view/src/PhpRenderer.php(230): include('...')
#3 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/php-view/src/PhpRenderer.php(204): Slim\Views\PhpRenderer->protectedIncludeScope()
#4 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/php-view/src/PhpRenderer.php(69): Slim\Views\PhpRenderer->fetch()
#5 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/src/routes.php(222): Slim\Views\PhpRenderer->render()
#6 [internal function]: Closure->{closure}()
#7 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(40): call_user_func()
#8 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/Route.php(281): Slim\Handlers\Strategies\RequestResponse->__invoke()
#9 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\Route->__invoke()
#10 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/Route.php(268): Slim\Route->callMiddlewareStack()
#11 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/App.php(503): Slim\Route->run()
#12 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\App->__invoke()
#13 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/App.php(392): Slim\App->callMiddlewareStack()
#14 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/vendor/slim/slim/Slim/App.php(297): Slim\App->process()
#15 /home/marusho-rental/www/haregi-rental.com/public/furisode_v3/public/index.php(97): Slim\App->run()
#16 {main}