Simply some tutorial needed

When I am exporting Adobe Animate animation to Lottie file following error message is coming A JavaScript error occurred TypeError: timeline is undefined

When trying to use the Lottie Extension, I get an error reading "A JavaScript Error Occurred. TypeError: Timeline Is Undefinied." I tried uninstalling and re-installing everything, but got nothing to work.

I can’t do the initial login to the extension. I do: Window > Extensions > LottieFiles > click Login I see a loading spinner for a few seconds. Nothing happens, and then I just see the login page again. Any ideas about this problem? I sent an email to support@lottiefiles.com already

I created a simple animation in Animate CC, where a rectagnle moves diagonally in a scene, using a shape tween. In the exported animation, the rectangle also rotates, but only in the preview. When I upload it, the animation is correct, and the preview also becomes correct. https://lottiefiles.com/share/clymfmsn

5 layer classic tween animation... only one frame rendered.

I created a simple animation, where a rectangle moves diagonally, and goes from blue with 100% alpha to green with 0% alpha. The colour transition is visible in the lottie export, but the transpacency is not. https://lottiefiles.com/share/viod5iif

When I try to export my animation I get this error: A JavaScript error occurred. TypeError: timeline is undefined. How do i fix this?

My Lottie rendered output file is blank and I am not sure why