How to open attachment in InAppChat

I am not able to open attachments like image, video or any files which I have send as a message. Using SendBird Sample InAppChat code for now.
Using this sample code =>GitHub - sendbird/sendbird-chat-sample-android

// If problem, please fill out the below. If question, please delete.
[SDK Version]
// 4.+

[Reproduction Steps]
// Just send any image, video or file and try to open it.


[Current impact]