The image error is generated below, it is due to the lack of dtb file, is it because ARCH=arm64 is selected in the menuconfig configuration, which causes this error?
Successful build, creating image...
Parallel mksquashfs: Using 2 processors
Creating 4.0 filesystem on /home/matt/http://LibreELEC.tv/target/LibreELEC-RPi4.arm-10.0-devel-20210413080833-c5d7822.system, block size 1048576.
[==============================================================================================================================================================================================================/] 7327/7327 100%
Exportable Squashfs 4.0 filesystem, zstd compressed, data block size 1048576
compressed data, compressed metadata, compressed fragments,
no xattrs, compressed ids
duplicates are removed
Filesystem size 111889.52 Kbytes (109.27 Mbytes)
37.11% of uncompressed filesystem size (301542.07 Kbytes)
Inode table size 78152 bytes (76.32 Kbytes)
25.31% of uncompressed inode table size (308790 bytes)
Directory table size 91863 bytes (89.71 Kbytes)
41.49% of uncompressed directory table size (221406 bytes)
Number of duplicate files found 172
Number of inodes 9339
Number of files 7231
Number of fragments 194
Number of symbolic links 721
Number of device nodes 0
Number of fifo nodes 0
Number of socket nodes 0
Number of directories 1387
Number of ids (unique uids + gids) 2
Number of uids 1
root (0)
Number of gids 2
root (0)
unknown (81)
Running /home/matt/http://LibreELEC.tv/packages/tools/bcm2835-bootloader/release
cp: cannot stat '/home/matt/http://LibreELEC.tv/build.LibreELEC-RPi4.arm-10.0-devel/image/system/usr/share/bootloader/*.dtb': No such file or directory
*********** FAILED COMMAND ***********
. ${FOUND_PATH}
**************************************
make: *** [Makefile:12:image] Error1