flutter run failed with permission denied (copy to /usr/local/) why?

[sgon00]

$ flutter run -d linux
Launching lib/main.dart on Linux in debug mode...
CMake Error at cmake_install.cmake:66 (file):
  file INSTALL cannot copy file
  "/home/user/flutter-folio/build/linux/x64/debug/intermediates_do_not_run/flutter_folio"
  to "/usr/local/flutter_folio": Permission denied.

Building Linux application...                                           
Exception: Build process failed

This problem is really weird to me. I am not installing anything. I just want to run the project to see a demo app. Why does it try to install something to my /usr/local/ directory?

First, I don't think it should install anything when I run flutter run -d linux.
Second, even if it has to install something, it should install to a local path instead of system path. /usr/local/ is owned by root.

Thanks a lot.

[sgon00]

I figured out the problem can be fixed by executing flutter clean,
and then flutter run -d linux again.
But I have no ideas why the clean command will make flutter not copy the executable file to anywhere.

[hrydi]

for me, i just removed linux directory in flutter-folio root directory
and then generate new one from other directory (create new directory) and exec flutter create --platforms=linux .
and then copy linux directory from that folder to flutter-folio
and executing flutter run -d linux