Card + Carousel template message stopped working in dialogflow

Pre condition, Condition to reproduce

Cards and Carousel template stopped working since last week. Ive made no changes and was working perfectly before.

Issue/ Error Message details

Messages containing Cards and Carousel template dont send

Accompanying respective source code

Resolution Tried

As soon as i remove Cards and Carousel template in the dialog it works. Image / Text / Question template all work except Cards and Carousel template. I tried contacting Line my service twice but they dont help at all :(

Reference information (Version / Platform/ environment)