Best way to transfer a picture it to a server

Ionic Framework ionic-v3
6

I tried to build it for android (and it in fact builds it) but I get errors:

TypeScript error: C:/Users/schmid/ionic2/filetransferexpample/FileTransferExample/source/app/services/plugins.service.ts(54,26): Error TS2304: Cannot find name 'FileTransfer'.
TypeScript error: C:/Users/schmid/ionic2/filetransferexpample/FileTransferExample/source/app/services/plugins.service.ts(55,31): Error TS2304: Cannot find name 'FileUploadOptions'.
TypeScript error: typings/main.d.ts(2,1): Error TS6053: File 'typings/main/ambient/cordova/plugins/filesystem/index.d.ts' not found.
TypeScript error: typings/main.d.ts(3,1): Error TS6053: File 'typings/main/ambient/cordova/plugins/filetransfer/index.d.ts' not found.