Cannot read property 'folder' of undefined TypeError: Cannot read property 'folder' of undefined

Hello im installing a script for a friend, but i came accross this error, the project uses node, nginx, Ubuntu 18.04

Cannot read property 'folder' of undefined
TypeError: Cannot read property 'folder' of undefined
at new Skins (/var/www/html/asf-master/lib/as-skins-config.js:67:52)
at getBkTags (/var/www/html/asf-master/lib/backend.js:24:15)
at Object.handlerInitData [as getInitData] (/var/www/html/asf-master/lib/backend.js:75:17)
at handleIndex (/var/www/html/asf-master/lib/routes.js:47:10)
at Layer.handle [as handle_request] (/var/www/html/asf-master/node_modules/express/lib/router/layer.js:95:5)
at next (/var/www/html/asf-master/node_modules/express/lib/router/route.js:137:13)
at Route.dispatch (/var/www/html/asf-master/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/var/www/html/asf-master/node_modules/express/lib/router/layer.js:95:5)
at /var/www/html/asf-master/node_modules/express/lib/router/index.js:281:22
at Function.process_params (/var/www/html/asf-master/node_modules/express/lib/router/index.js:335:12)
at next (/var/www/html/asf-master/node_modules/express/lib/router/index.js:275:10)
at Function.handle (/var/www/html/asf-master/node_modules/express/lib/router/index.js:174:3)
at router (/var/www/html/asf-master/node_modules/express/lib/router/index.js:47:12)
at Layer.handle [as handle_request] (/var/www/html/asf-master/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/var/www/html/asf-master/node_modules/express/lib/router/index.js:317:13)
at /var/www/html/asf-master/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/var/www/html/asf-master/node_modules/express/lib/router/index.js:335:12)
at next (/var/www/html/asf-master/node_modules/express/lib/router/index.js:275:10)
at livereload (/var/www/html/asf-master/node_modules/connect-livereload/index.js:170:5)
at Layer.handle [as handle_request] (/var/www/html/asf-master/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/var/www/html/asf-master/node_modules/express/lib/router/index.js:317:13)
at /var/www/html/asf-master/node_modules/express/lib/router/index.js:284:7

Can anyone help me please? please make a bid thanks