Generate color theme throws an error

[estylianou]

Running the following command to generate the color theme
$ raml2html --theme "raml2html-slate-theme" -o "myhtml.html" -i "myraml.raml" --generate-color-theme

Get the following output:

[...]

////////////////////////////////////////////////////////////////////////////////
// INTERNAL
////////////////////////////////////////////////////////////////////////////////
// These settings are probably best left alone.
$break-words
-ms-word-break: break-all
word-break: break-all

/* Non standard for webkit */
word-break: break-word

-webkit-hyphens: auto
-moz-hyphens: auto
hyphens: auto
internal/fs/utils.js:259
throw err;
^

Error: ENOENT: no such file or directory, lstat '.../node_modules/raml2html-slate-theme/index.nunjucks'
at Object.realpathSync (fs.js:1646:7)
at getConfigForTemplate (/.../node_modules/raml2html/index.js:68:41)
at Object.getConfigForTheme (/.../node_modules/raml2html/index.js:156:12)
at Object. (/.../node_modules/raml2html/bin/raml2html:69:22)
at Module._compile (internal/modules/cjs/loader.js:1176:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1196:10)
at Module.load (internal/modules/cjs/loader.js:1040:32)
at Function.Module._load (internal/modules/cjs/loader.js:929:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
at internal/main/run_main_module.js:17:47 {
errno: -2,
syscall: 'lstat',
code: 'ENOENT',
path: '/.../node_modules/raml2html-slate-theme/index.nunjucks'