安装fblualib时，遇到以下错误：Missingdependenciesforfbluaunit:lua-cjson>=2.1.0^CWarning:Failedsearchingmanifest:Failedloadingmanifest:Failedfetchingmanifestforhttp://luarocks.org/repositories/rocks-Errorfetchingfile:Faileddownloadinghttp://luarocks.org/repositories/rocks/manifestError:Couldnotsatisfydependency