cannot install loadcaffe via luarocks

[Dr-yangyangzhang]

I found it very strange. The error is as follows:

`luarocks install image
Warning: Failed searching manifest: Failed loading manifest for https://raw.githubusercontent.com/torch/rocks/master: Error loading file: [string "/Users/a123123/.cache/luarocks/https___raw.gi..."]:1: unexpected symbol near char(31)
Warning: Failed searching manifest: Failed loading manifest for https://raw.githubusercontent.com/rocks-moonscript-org/moonrocks-mirror/master: Error loading file: [string "/Users/a123123/.cache/luarocks/https___raw.gi..."]:1: unexpected symbol near char(31)

Error: No results matching query were found.`