can not register ngx-uploader

[erata]

hi, i tried to register ngx-uploader but can not. there directives, classes, .. . i tried different ways but could not. is there a way you suggest me. thanks.

my projects.json...

this.SYSTEM_CONFIG_DEV.paths['ngx-uploader'] =
       `${this.APP_BASE}node_modules/ngx-uploader`;


     this.SYSTEM_BUILDER_CONFIG.packages['ngx-uploader'] = {
       main: 'ngx-uploader.js',
       defaultExtension: 'js'
     }