This question already has an answer here:

I am trying to make a simple ink drop animation. The image looks great in Preview, but when I Render a second later the screen is just black. I can't figure out why this is happening.

Here's the project file!

https://drive.google.com/drive/folders/0B0iOn3LRcf5-YzBGRzlDQjgwQkE?usp=sharing

Would love some help!

marked as duplicate by cegaton, Duarte Farrajota Ramos, Denis, David Feb 12 '17 at 20:46

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

You have enabled nodes for rendering but there is no render layer connected to the composite node.

enter image description here

Add a in input>render_layer node and plug it to the composite node to get some output.

enter image description here

Not the answer you're looking for? Browse other questions tagged or ask your own question.