The size of tensor a (6300) must match the size of tensor b (6810)?

[StefanOltmann]

Using the RetinaFace sample I get this error message:
ai.djl.engine.EngineException: The size of tensor a (6300) must match the size of tensor b (6810) at non-singleton dimension 0

What does it mean?

[zachgk]

It means that in some NDArray operation, you are using NDArrays of incompatible shapes. For example, you can't add an array of Shape(3) to one of Shape(5). The shapes have to be equal or broadcastable to each other. The stack trace or more of the error message should give you some hints as to which operation is wrong

[StefanOltmann]

Thank you. I tracked the problem I had down and sent you an PR #3016. :)