LSDK 20.04 Booting Problem

I’m using latest version for lx2160a_build
but I changed RELEASE:=LSDK-21.08(Kernel 5.10.35) to LSDK-20.04 to use kernel V5.4.3.
Finally, succeed to compilation it.
and then wrote image(lx2160acex7_2000_700_3200)8_5_2-63bbd52.img) into emmc by using SD card.
but I faced to below problem. so I can’t find linux prompt yet.
it was displayed below “can’t open …” repeatedly.
Could you help me?

[ 6.685461] ALSA device list:
[ 6.688423] No soundcards found.
[ 6.691953] RAMDISK: gzip image found at block 0
[ 7.011853] EXT4-fs (ram0): mounted filesystem with ordered data mode. Opts: (null)
[ 7.019543] ext4 filesystem being mounted at /root supports timestamps until 2038 (0x7fffffff)
[ 7.028215] VFS: Mounted root (ext4 filesystem) on device 1:0.
Bad inittab entry at line 5
can’t open /dev/si: No such file or directory
can’t open /dev/~~: No such file or directory
can’t open /dev/l0: No such file or directory
can’t open /dev/l1: No such file or directory
can’t open /dev/l2: No such file or directory
can’t open /dev/l3: No such file or directory
can’t open /dev/l4: No such file or directory
can’t open /dev/l5: No such file or directory
can’t open /dev/l6: No such file or directory
can’t open /dev/z6: No such file or directory
can’t open /dev/S0: No such file or directory
can’t open /dev/S1: No such file or directory
can’t open /dev/AMA0: No such file or directory
can’t open /dev/z6: No such file or directory
can’t open /dev/S0: No such file or directory
can’t open /dev/S1: No such file or directory
can’t open /dev/AMA0: No such file or directory
can’t open /dev/z6: No such file or directory
can’t open /dev/S0: No such file or directory
can’t open /dev/S1: No such file or directory
can’t open /dev/AMA0: No such file or directory