docs(troubleshooting): Add AndroidX information and workaround (#2832)

site/docs-md/android/troubleshooting.md

@@ -39,6 +39,19 @@ That can be done easily from the File menu:
 
 ![Android Invalidate Caches](/assets/img/docs/android/invalidate-caches.png)
 
+## Error: "package android.support.* does not exist"
+
+This error occurs when some Cordova or Capacitor plugin has old android support dependencies instead of using the new AndroidX equivalent.
+You should report the issue in the plugin repository so the maintainers can update the plugin to use AndroidX dependencies.
+
+As workaround you can also patch the plugin using jetifier
+
+```bash
+npm install jetifier
+npx jetify
+npx cap sync android
+```
+
 ## Error: "Unable to load native-bridge.js. Capacitor will not function!"
 
 This error occurs when Capacitor's `native-bridge.js` file was not copied to the native project.