wrong ELF class: ELFCLASS32

ux-gnu/libvorbis.so.0 (0xf6750000)
ubuntu@ubuntu-ThinkPad-S1-Yoga:/ZIP_files$ sudo LD_PRELOAD=./dh_emu.so ./a.elf DH_SOUND_FIX=1 DH_CAMERAFIX=1
Starting up Wrapper...
main
su -c 'sh ./data/arping.sh ./save0/tmp/arping.txt ./save1/tmp/arping.txt&'
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
sh: 0: Can't open ./data/arping.sh
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
Can't open perl script "./data/ifconfig.pl": No such file or directory
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
perl: no process found
ERROR: ld.so: object './dh_emu.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ALSA lib conf.c:3357:(snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM surround51
nsAdrv: cannot open audio device surround51 (No such file or directory)