Bitnami install on Google Cloud / Smooth except EMAIL

Gmail SMTP를 사용 중인데 오류가 발생합니다:

Started POST "/finish-installation/register" for 221.133.124.208 at 2020-09-07 15:47:17 +0000
Processing by FinishInstallationController#register as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"GFYxTcxnzG29LzHQEMbe5pgysksmSIxPMDctBKXAATFXVaFRXvbyYReyMZpfv5UKfgMzC2pls+COFYOEdMihdg==", "email"=>"tat.t.tran@gmail.com", "username"=>"administrator", "password"=>"[FILTERED]", "commit"=>"Register"}
Redirected to http://haitra.xyz/finish-installation/confirm-email
Completed 302 Found in 2007ms (ActiveRecord: 0.0ms | Allocations: 203216)
Started GET "/finish-installation/confirm-email" for 221.133.124.208 at 2020-09-07 15:47:19 +0000
Processing by FinishInstallationController#confirm_email as HTML
  Rendering finish_installation/confirm_email.html.erb within layouts/finish_installation
  Rendered finish_installation/confirm_email.html.erb within layouts/finish_installation (Duration: 11.1ms | Allocations: 443)
  Rendered layouts/_head.html.erb (Duration: 4.5ms | Allocations: 304)
Completed 200 OK in 101ms (Views: 94.0ms | ActiveRecord: 0.0ms | Allocations: 3748)
  Rendering layouts/email_template.html.erb
  Rendered layouts/email_template.html.erb (Duration: 36.6ms | Allocations: 886)
Delivered mail d878748f-69e9-42ae-8252-877d6f6c2e40@haitra.xyz (1046.9ms)
Job exception: 534-5.7.9 앱 전용 비밀번호가 필요합니다. 자세한 내용은 다음 링크를 참고하세요.