Given groups=1, weight of size [512, 1024, 1, 1], expected input[1, 512, 8, 8] to have 1024 channels, but got 512 channels instead

This error message suggests that there is a mismatch between the expected number of channels in the input tensor and the actual number of channels. Specifically, the model expects the input tensor to have 1024 channels, but it only has 512 channels.

The problem may be related to the "groups" parameter, which is set to 1. This parameter controls how the input channels are split into groups for convolution. If the value of "groups" is not set correctly, it can cause the model to expect the wrong number of channels.

To fix this error, you may need to adjust the "groups" parameter or check that the input tensor has the correct number of channels. You may also want to check the architecture of the model to ensure that it is designed to handle input tensors with the expected number of channels.