If a required node is disconnected, it does not output an error. about ainodes-engine

[XmYx]

The only error here is the possibility to have multiple nodes connected to the execution socket, which i will fix, but otherwise, if you go one step further, and remove the exec connection from that orphan node, the graph will run, and it will produce output. Deforum implementation is WIP, the graph provided is a good starting point, set it up with your favorite defaults, and save it, but expect changes in it, as animation will be heavily under development.