[Q] Error when compile cm12 topic

When i compile cm12 for s5312 devices we had error:
Install system fs image: /home/karthick/ROM/*cm12/out/target/*product/corsica/*system.img
/home/karthick/ROM/*cm12/out/target/*product/corsica/*system.img+/home/*karthick/ROM/cm12/*out/target/product/*corsica/obj/*PACKAGING/*recovery_patch_interm*ediates/*recovery_from_boot.p maxsize=1023356928 blocksize=135168 total=380108490 reserve=10407936
#@echo -e "3[33m""Package target files:""3[0m"" /home/karthick/ROM/*cm12/out/target/*product/corsica/obj/*PACKAGING/*target_files_intermed*iates/*cm_corsica-target_fil*es-da94839291.zip"
building image from target_files RECOVERY...
building image from target_files BOOT...
Traceback (most recent call last):
File "./build/tools/*releasetools/*make_recovery_patch",* line 53, in <module>
main(sys.argv[1:])
File "./build/tools/*releasetools/*make_recovery_patch",* line 49, in main
common.MakeRecoveryP*atch(input_dir, output_sink, recovery_img, boot_img)
File "/home/karthick/ROM/*cm12/build/tools/*releasetools/*common.py", line 1167, in MakeRecoveryPatch
td_pair = GetTypeAndDevice("/*boot", info_dict)
File "/home/karthick/ROM/*cm12/build/tools/*releasetools/*common.py", line 1118, in GetTypeAndDevice
return PARTITION_TYPES[fsta*b[mount_point].fs_ty*pe], fstab[mount_point].d*evice
KeyError: '/boot'
build/core/*Makefile:1422: recipe for target '/home/karthick/ROM/*cm12/out/target/*product/corsica/obj/*PACKAGING/*target_files_intermed*iates/*cm_corsica-target_fil*es-da94839291.zip' failed
Please help us to solve this problem. Thank you