[3.0.0-rc4] Images not found on remote server - League\\Glide\\Filesystem\\FileNotFoundException

production.ERROR: Could not find the image 

. {"exception":"[object] (League\\Glide\\Filesystem\\FileNotFoundException(code: 0): Could not find the image 

. at /var/www/example.com/web/vendor/league/glide/src/Server.php:629)
[stacktrace]
#0 /var/www/example.com/web/vendor/league/glide/src/Server.php(548): League\\Glide\\Server->makeImage()
#1 /var/www/example.com/web/vendor/area17/twill/src/Services/MediaLibrary/Glide.php(95): League\\Glide\\Server->getImageResponse()
#2 /var/www/example.com/web/vendor/area17/twill/src/Http/Controllers/Front/GlideController.php(12): A17\\Twill\\Services\\MediaLibrary\\Glide->render()
#3 /var/www/example.com/web/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(46): A17\\Twill\\Http\\Controllers\\Front\\GlideController->__invoke()
#4 /var/www/example.com/web/vendor/laravel/framework/src/Illuminate/Routing/Route.php(260): Illuminate\\Routing\\ControllerDispatcher->dispatch()
#5 /var/www/example.com/web/vendor/laravel/framework/src/Illuminate/Routing/Route.php(205): Illuminate\\Routing\\Route->runController()
#6 /var/www/example.com/web/vendor/laravel/framework/src/Illuminate/Routing/Router.php(798): Illuminate\\Routing\\Route->run()
#7 /var/www/example.com/web/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(141): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}()


Thumbnails are showing up correctly in the backend. 
Perhaps relevant when I try to run 

 I get