without a hitch
US /wɪðˈaʊt ə hɪtʃ/
UK /wɪðˈaʊt ə hɪtʃ/

1.
tanpa hambatan, lancar
without any problems or difficulties
:
•
The event went off without a hitch.
Acara berjalan tanpa hambatan.
•
The surgery was completed without a hitch.
Operasi selesai tanpa hambatan.