If you are using MINGW64 Git Bash and getting escaped character codes like ←[32m, ←[39m, ←[33m, ←[34m, ←[37m in the output of Symfony app/console, do this to fix the display:
MINGW64 > Options > Terminal > Type
Change xterm to xterm-256color
Restart MINGW64
Same issue is discussed here, regarding Laravel Artisan Console character codes output.