Form builder angular Can't bind to 'formGroup' since it isn't a known property of 'form'

hi can someone explain me why i get error like my title , i use form builder and also i import reactive form module and forms module in my own module and my app module but still get errorl like this Can't bind to 'formGroup' since it isn't a known property of 'form'

my Component

my Template

my own module

app module