message: [batch_kernels] Add input index and shape to padding shape error message.
diff: @@ -365,7 +365,8 @@ class BatchResource : public ResourceBase {
  if (padding_source.shape().dim_size(0) == 0) {
  return errors::InvalidArgument(
  "Cannot use an empty tensor with zero rows as padding when "
  - "batching.");
  + "batching. (Input ",
  + i, " got shape ", padding_source.shape().DebugString(), ".)");
  }
  if (padding_source.shape().dim_size(0) == 1) {
  padding = padding_source;
  