onnx to hef reports strange error

I got an error when converting from onnx to hef

hailo_sdk_common.hailo_nn.exceptions.UnsupportedModelError: Unsupported dimensions at concat layer concat2 (translated from /block/layers.38/Concat_1) with output shapes base_slice6: output_shape=[-1, 1, 600, 11] base_ew_add4: output_shape=[-1, -7, 600, 11] . The concat layer operates on the feature dim (#3) and all other spatial dimensions (#0, #1, #2) must all be equal.

The input and output of onnx are shown in the figure


What is the reason? Looking forward to your reply, thank you very much.