Flutter instant preview doesn't work

After letting the project finish Initializing I opened the main.dart preview icon and left my mobile for a long time before and also after opening project and preview once again which I think was about 10-20 mins

<img width="1080" height="2400" alt="Image" src="https://github.com/user-attachments/assets/4b65f3d0-1094-4337-89a8-942b2bf8a3b3" />