SDK13.0.0 DFU debug

[jwx]

I built ...\examples\dfu\bootloader_secure\secure_dfu.eww   ,pass,then when download to PCA10040 board to debug,but it show error" ELF/DWARF Error: Unsupported .debug_info format version:4 " ,what's the problem?

[jwx]

I use iar,don't see makefile,can you tell me the path?thanks!