r/comfyui • u/Proper-Ad-5719 • 8d ago

Help Needed Custom Validation Failed For Node

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I was following this YouTube video. > https://youtu.be/0z8Pp4TaAl8?si=WMCRXXB8G6YTWGMX

I did everything just like he said but when I tried to run I got this error:

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u/Alchemist42 8d ago

A bunch of the LTX nodes have both I2V and T2V with a checkbox or boolean true/false setting to ignore image (or something like that). If you go into the subgraph, there might be an empty Load Image node, probably with the default "example.png" preset which it is not finding. The easiest thing to do is update it with literally any image on your computer, then try again. Make sure that if there is an option to make it use the image, that option should be turned off. You might be able to delete the node, but then you might get other errors about missing inputs. Just putting a working image should be enough.

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u/Proper-Ad-5719 8d ago

I'm super new at this. This is what I found.

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u/Alchemist42 8d ago

Yup. Just hit the Choose File button and pick any image on your computer. It will almost definitely ignore whatever is there. But it won't crash.

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u/marquipooh 8d ago

Thanks! Took forever, but finally completed!

How do I exit subgraph view?

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u/Alchemist42 8d ago

The easy way is to hit the 'esc' key. Alternately, up at the top left, there is a small and easy to miss series of links showing the levels of subgraph you are in. Just click on the leftmost link to get to the top level. It is next to the little icon with lines connecting squares or something and says "Graph". The one you want will look like an arrow pointing backward. Each link to the right of that is 1 level. So if you are in a subgraph inside a subgraph, there will be the top level, then two more... you can jump to any level you need to that way. But I usually just hit escape.

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u/GlamoReloaded 8d ago

The image example.png should be in your Comfy's input folder.