Is it bad: Error: Pack node (detection/stack_1) axis attribute is out of bounds: 2 ?

What is this error ? How bad is it ? Can it be ignored or needs to be fixed ? It is happening in the container .

There should be no problems with correctness here. The error message is likely being triggered from

That check is inside a graph optimization step that simplifies slices of stack operations in certain cases (see The “error” means that the optimization will not get applied to the graph. In this case TF will simply execute the un-optimized (but functionally correct) graph.