Add missing require in school route

src/libs/routes/school.js

@@ -16,6 +16,8 @@ const ReqQueryFields = require(`${libs}/middlewares/reqQueryFields`);
 
 const request = require(`request`);
 
+const config = require(`${libs}/config`);
+
 let rqf = new ReqQueryFields();
 let rqfCount = new ReqQueryFields();