There is an app named My Demo App by sauce labs. In that app there is a signature pad kind of thing where user can write things by double clicking on the board and then hold it and then moving the finger like how typical MS paint work.
How do I simulate this action of double clicking then hold and move the cursor to write by selenium. I am using Appium.

In our application we have a functionality to allow camera to capture videos or pictures, we have written code to handle it but not finding any proper solution

I have written the appium script while running the script on the real android device. I am facing the 500 error