Increase maximum file upload size

src/Foundation.hs

@@ -400,6 +400,8 @@ instance Yesod UniWorX where
         120    -- timeout in minutes
         "client_session_key.aes"
 
+    maximumContentLength _ _ = Just $ 50 * 2^20
+
     -- Yesod Middleware allows you to run code before and after each handler function.
     -- The defaultYesodMiddleware adds the response header "Vary: Accept, Accept-Language" and performs authorization checks.
     -- Some users may also want to add the defaultCsrfMiddleware, which: