Fix error in api.js

src/libs/routes/api.js

@@ -38,6 +38,8 @@ const population = require('./population')
 
 const idhm = require('./idhm');
 
+const idhmr = require('./idhmr');
+
 api.get('/', (req, res) => {
     res.json({ msg: 'SimCAQ API is running' });
 });