often encounter
When running the simulator, running and running again, an error is reported
Could not build the application for the simulator.
Error launching application on iPhone 14 Pro Max.
My solution is to enter in the terminal of VSCode
flutter clean
Then just re-run
Oh, and note the comment in your .dart file // import 'dart:html';
Sometimes modifying the main.dart code for a certain time may cause Android studio to automatically import again and import dart:htmlfail to compile again, just need to comment or delete again