You have no animation created yet.
When you double click on the CHARACTER "SPRITE" in the Object Panel in the construct right side. It will give you three other windows
In The IMAGE EDITOR - You uploaded CHARACTER image here.
In ANIMATIONS BAR - Now you see you have something called Default --> Right Click on the empty space in this window and ADD ANIMATION. Now rename it as JUMP. You have just created an animation called JUMP. You can't call an animation which is not yet created. As it is now created. Go to the next window
ANIMATION FRAMES BAR - Right Click and add as many frames as you need in the animation. Upload images for every frame. Just upload any image sequence image for now and see what happens.
So now you need to draw the whole jump and upload here.
Once you have done this go to this manual. You need to see this. It will have explanation about sprites and animation.
https://www.scirra.com/manual/48/image- ... ons-editor
Hope it helps