working config on scalingo

Author: Holist

config/initializers/grover.rb

@@ -2,9 +2,6 @@
   config.options = {
     format: "A4",
     # print_background is mandatory to print the css background colors
-    print_background: true,
-    launch_args: [
-      "--no-sandbox"
-    ]
+    print_background: true
   }
 end