Error while building gulp "banner is not a function"?

Question

gulp.js

bug with gulp.
Installing the gulp-plumber plugin separately didn't help.
Everything is ok with the code, if this block is commented out. it will find the error elsewhere. why?

+menu(
                      {
                      'containerWidth':'600',
                      '_containerClass':'menu-corp',
                      'bgColor':'#284268'
                      },
                      [
                        {'title':'Личный кабинет', 'link':'http://corp.xxx.ru/login'},
                        {'title':'Каталог', 'link':'http://corp.xxx.ru'},
                        {'title':'Акции', 'link':'http://corp.xxx.ru/special_offers/current'},
                        {'title':'Суперцена', 'link':'http://corp.xxx.ru/super_price'}
                      ]
                    )

Answer 1

banner is not a function