errors compiling armbian with rt-patch

errors from patching.log|
Processing file /root/armbian/userpatches/kernel/sunxi-current/rt-preempt-5.9.1-rt20.patch
Reversed (or previously applied) patch detected!  Skipping patch.
1 out of 1 hunk ignored -- saving rejects to file fs/exec.c.rej
Reversed (or previously applied) patch detected!  Skipping patch.
17 out of 17 hunks ignored -- saving rejects to file fs/io-wq.c.rej
2 out of 33 hunks FAILED -- saving rejects to file include/linux/seqlock.h.rej
Reversed (or previously applied) patch detected!  Skipping patch.
5 out of 5 hunks ignored -- saving rejects to file init/Kconfig.rej
1 out of 6 hunks FAILED -- saving rejects to file kernel/fork.c.rej

errors from output.log
Displaying message: Exporting new kernel config /root/armbian/output/config/linux-sunxi-current.config info
Displaying message: ERROR in function compile_kernel compilation.sh:407 err
Displaying message: Kernel was not built @host err
Displaying message: Process terminated  info


errors from compilation.log

cc1: some warnings being treated as errors
make[1]: *** [scripts/Makefile.build:117: arch/arm/kernel/asm-offsets.s] Error 1
make: *** [Makefile:1200: prepare0] Error 2
make: *** Waiting for unfinished jobs....