i kept getting an error that said Given groups=1, weight of size [16, 3, 3, 3], expected input[1, 4, 1024, 1024] to have 3 channels, but got 4 channels instead.

I attached a VAE decode box to the "latent" pink circle in the "KSampler (Efficient)" box under the blue header that says Ksampler-2, and attached "save image" to that VAE decode box.

Then I added a "load vae" box and connected it to the red VAE circle within the KSampler (Efficient) box under the blue header that said Ksampler-1. And I made sure all VAE red icons were connected to something because some didnt even have a connection.