从 '@angular/fire/firestore' 导入 { AngularFirestoreModule } ；// => 错误
模块“@angular/fire/firestore”没有导出成员“AngularFirestoreModule”
包.json
“@角/火”：“^7.0.4”，
firebase angularfire angular
angular ×1
angularfire ×1
firebase ×1