Launching lib\main.dart on Windows in debug mode...
Building Windows application...
CUSTOMBUILD : error : Cannot run with sound null safety, because the following dependencies [D:\flutter_prj\lite\build\windows\flutter\flutter_assemble.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(241,5): error MSB8066: ��D:\flutter_prj\lite\build\windows\CMakeFiles\4d91a3ed8709c7d531e931a023fe3b1a\flutter_windows.dll.rule;D:\flutter_prj\lite\build\windows\CMakeFiles\eaeb6bfad0e0fb05e106ef00705c0a0a\flutter_assemble.rule�����Զ����������˳�������Ϊ 1�� [D:\flutter_prj\lite\build\windows\flutter\flutter_assemble.vcxproj]
Exception: Build process failed.
