error when makebuildworld

[sonjaya]

dear all 

 i try update my fb box ( 5.2 release to 5.3 stable) ,
i do it  like this 

1. i made update all source of my kernel to 5.3 with
cvsup ( #cvsup -g -L 2 fileconf-CVS) 
2. #mergemaster -p 
3.make buildworld
and i get error like this  "

WARNING: type @@ invalid
mkmagic: could not find any magic files!
*** Error code 1

Stop in /usr/cvsup/src/lib/libmagic.
*** Error code 1

Stop in /usr/cvsup/src/lib.
*** Error code 1

Stop in /usr/cvsup/src.
*** Error code 1

Stop in /usr/cvsup/src.
*** Error code 1

Stop in /usr/cvsup/src.
*** Error code 1

Stop in /usr/cvsup/src.
PAG_ROUTER# "

how i solved that problem ?

and second question : where i get manual for upgrade
my fb box from 5.2 release to 5.3 stable ?
thx before and now my fb 5.2 box still on because if i
reboot will never up againt .
my regard


SONJAYA