缺少依赖项lua-cjson＆gt; = 2.1.0用于安装fblualib？-英雄云拓展知识分享

安装fblualib时，遇到以下毛病：

Missing dependencies for fbluaunit:
lua-cjson >= 2.1.0
^CWarning: Failed searching manifest: Failed loading manifest: Failed     fetching manifest for http://luarocks.org/repositories/rocks - Error fetching file: Failed downloading http://luarocks.org/repositories/rocks/manifest
Error: Could not satisfy dependency: lua-cjson >= 2.1.0
Missing dependencies for fbluaunit:
lua-cjson >= 2.1.0
^CWarning: Failed searching manifest: Failed loading manifest: Failed fetching manifest for http://luarocks.org/repositories/rocks - Error fetching file: Failed downloading http://luarocks.org/repositories/rocks/manifest
Error: Could not satisfy dependency: lua-cjson >= 2.1.0
cmake -E make_directory build &&
cd build &&
cmake -DROCKS_PREFIX=/usr/local/lib/luarocks/rocks/fbpython/0.1⑴ \
-DROCKS_LUADIR=/usr/local/lib/luarocks/rocks/fbpython/0.1⑴/lua \
-DROCKS_LIBDIR=/usr/local/lib/luarocks/rocks/fbpython/0.1⑴/lib \
.. &&
make
CMake Error at CMakeLists.txt:25 (FIND_PACKAGE):
By not providing "FindTorch.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Torch", but
CMake did not find one.
Could not find a package configuration file provided by "Torch" with any of
the following names:
TorchConfig.cmake
torch-config.cmake
Add the installation prefix of "Torch" to CMAKE_PREFIX_PATH or set
"Torch_DIR" to a directory containing one of the above files.  If     "Torch"
provides a separate development package or SDK, be sure it has been
installed.
-- Configuring incomplete, errors occurred!
See also "/tmp/fblualib-build.0APMyV/fblualib/fblualib/python/build/CMakeFiles/CMakeOutput.log".
Error: Build error: Failed building.

我试图使用我的luarocks安装lua-cjson，而安装完成后，它显示了：

lua-cjson 2.1.0⑴ is now built and installed in /home/XXXXXXXXX/torch/install/ (license: MIT)

我认为它是安装的，但是当我再次安装fblualib时，会致使相同的毛病。如何克服它？提早致谢。