Add missing code.

models/attachments.js

@@ -1,5 +1,7 @@
 import { Meteor } from 'meteor/meteor';
 import { FilesCollection } from 'meteor/ostrio:files';
+import { createBucket } from './lib/grid/createBucket';
+import fs from 'fs';
 import path from 'path';
 import { AttachmentStoreStrategyFilesystem, AttachmentStoreStrategyGridFs} from '/models/lib/attachmentStoreStrategy';
 import FileStoreStrategyFactory, {moveToStorage, STORAGE_NAME_FILESYSTEM, STORAGE_NAME_GRIDFS} from '/models/lib/fileStoreStrategy';

models/avatars.js

@@ -1,5 +1,7 @@
 import { Meteor } from 'meteor/meteor';
 import { FilesCollection } from 'meteor/ostrio:files';
+import { createBucket } from './lib/grid/createBucket';
+import fs from 'fs';
 import path from 'path';
 import FileStoreStrategyFactory, { FileStoreStrategyFilesystem, FileStoreStrategyGridFs} from '/models/lib/fileStoreStrategy';