I'm having this Error when I'm debugging and building my Flutter Project on VSCode

Launching lib\main.dart on sdk gphone x86 arm in debug mode... lib\main.dart:1

../flutter/.pub-cache/hosted/pub.dartlang.org/http-0.13.1/lib/src/io_client.dart:30:72: Error: Expected ';' after this.

  var ioRequest = await _inner!.openUrl(request.method, request.url))
                                                                   ^

../flutter/.pub-cache/hosted/pub.dartlang.org/http-0.13.1/lib/src/io_client.dart:30:73: Error: Expected an identifier, but got ')'.

Try inserting an identifier before ')'.

  var ioRequest = await _inner!.openUrl(request.method, request.url))
                                                                    ^

../flutter/.pub-cache/hosted/pub.dartlang.org/http-0.13.1/lib/src/io_client.dart:30:73: Error: Expected ';' after this.

  var ioRequest = await _inner!.openUrl(request.method, request.url))
                                                                    ^

../flutter/.pub-cache/hosted/pub.dartlang.org/http-0.13.1/lib/src/io_client.dart:30:73: Error: Unexpected token ')'.

  var ioRequest = await _inner!.openUrl(request.method, request.url))
                                                                    ^

../flutter/.pub-cache/hosted/pub.dartlang.org/http-0.13.1/lib/src/io_client.dart:32:9: Error: Expected an identifier, but got '..'. Try inserting an identifier before '..'. ..followRedirects = request.followRedirects ^^