Build ERROR cmake compile

 -C tools/cmake compile
make -r world: build failed. Please re-run make with V=s to see what's going on
make: *** [/media/user/Storage/Firmware-4G-Router-master/include/toplevel.mk:173: world] Error 1

`error: static assertion failed: comparison object must be invocable as const
  770 |               is_invocable_v<const _Compare&, const _Key&, const _Key&>,
`

guess you need to fix the code ...