Flutter send email with image attachment

Just a line to debug. The app have to take a picture with the camera and then send it by email. camera is working, email is working picture in email attachment must be fixed! thanks void sendemail(var F) async { String username = 'X'; String password = 'X'; final smtpServer = gmail(username, password); final message = Message() ..from = Address(username, 'Your name') ..[login to view URL]('X') ..subject = 'Test Dart Mailer library :: ? :: ${[login to view URL]()}' ..text = 'This is the plain text.\nThis is line 2 of the text part.' ..html = "<h1>Test</h1>\n<p>Hey! Here's some HTML content</p>" ..attachments = [ FileAttachment(File(F)) ..location = [login to view URL] ..cid = '<myimg3.141>'] ; try { final sendReport = await send(message, smtpServer); print('Message sent: ' + [login to view URL]()); } on MailerException catch (e) { print('Message not sent.'); for (var p in [login to view URL]) { print('Problem: ${[login to view URL]}: ${[login to view URL]}'); } } }