Cannot update kexts or cache catalina beta 8

Getting this errors when using "sudo kextcache -i /

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/BuildRoot/Library/Caches/com.apple.xbs/Sources/kext_tools/kext_tools-623.0.14/rosp_staging.m.84: Error creating script /private/var/install/shove_kernels: 17 (File exists)

symlink("../../../PrelinkedKernels/prelinkedkernel", "/Library/Apple/System/Library/Caches/com.apple.kext.caches/Startup/kernelcache") failed 2 (No such file or directory)