[www-scripts] Doxygen Doc Update: ERROR

[LLVM via www-scripts]

UPDATING /opt/doxygen-docs/src/llvm-project
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
   b65ba70..50927f3  master     -> origin/master
Auto packing the repository for optimum performance. You may also
run "git gc" manually. See "git help gc" for more information.
warning: unable to access 'clang/clang/.gitattributes': Too many levels of symbolic links
First, rewinding head to replay your work on top of it...
Fast-forwarded master to 50927f3191f908142201ccc50962537bf9d96bda.
Generating Makefiles
CMake Error at CMakeLists.txt:3 (cmake_minimum_required):
  CMake 3.13.4 or higher is required.  You are running version 3.7.1


-- Configuring incomplete, errors occurred!
See also "/opt/doxygen-docs/build/CMakeFiles/CMakeOutput.log".
See also "/opt/doxygen-docs/build/CMakeFiles/CMakeError.log".