Why does effect doesn't work

hi there, I made an animation in after effects and then with Vector files ( shape layers ) And the animation is working fine but it wont apply the effects i put on the layers ( animation composer and echo).
Then i tried to do it with PNG sequence but the animation is flickering.
Does any one know what the problem is?

Link for the PNG sequence animation:

Link for the Regular Lottie Animation:

Hi there @omristeigman Those effects (Echo) are not transferable to the lottie format. Almost all Effects from the Effects and Presets won’t export through the lottie format.

For the PNG sequence… if you can, export it with a transparent background then convert to a WEBm video, Animated PNG, or Gif: