Add troubleshooting for Not Found error (#1586)

Issues with Vite's optimizer

website/versioned_docs/version-v2.0.0-beta.38/guides/troubleshooting.mdx

@@ -73,4 +73,30 @@ Source: https://github.com/wailsapp/wails/issues/1233
 
 Sometimes the generated Typescript doesn''t have the correct types. To mitigate this,
 it is possible to specify what types should be generated using the `ts_type` struct tag. For
-more details, please read [this](https://github.com/tkrajina/typescriptify-golang-structs#custom-types).
+more details, please read [this](https://github.com/tkrajina/typescriptify-golang-structs#custom-types).
+
+## Page Not found
+
+When creating multi-page applications (multiple `.html` files), they are not automatically added to `frontend/dist` by Vite, resulting in a `Not Found` error. This is an issue with Vite and not Wails. To manually include files, create a file at `myproject/frontend/vite.config.js` and define rollUp options. An example is provided below:
+
+```
+// vite.config.js
+import { resolve } from 'path'
+import { defineConfig } from 'vite'
+
+export default defineConfig({
+  build: {
+    rollupOptions: {
+      input: {
+        main: resolve(__dirname, 'index.html'),
+        login: resolve(__dirname, 'src/login.html'),
+        font: resolve(__dirname, 'src/assets/fonts/nunito-v16-latin-regular.woff2'),
+      }
+    }
+  }
+})
+```
+
+For more details read the Vite documentation here: https://vitejs.dev/guide/build.html#multi-page-app
+
+Source: https://github.com/wailsapp/wails/issues/1582