TypeError: article.query is not a function
   at search (/var/www/html/hamkelasi/middlewares/index.js:803:15)
   at Layer.handle [as handle_request] (/var/www/html/hamkelasi/node_modules/express/lib/router/layer.js:95:5)
   at next (/var/www/html/hamkelasi/node_modules/express/lib/router/route.js:137:13)
   at indexSideBar (/var/www/html/hamkelasi/middlewares/index.js:716:5)
   at Layer.handle [as handle_request] (/var/www/html/hamkelasi/node_modules/express/lib/router/layer.js:95:5)
   at next (/var/www/html/hamkelasi/node_modules/express/lib/router/route.js:137:13)
   at hourlyJson (/var/www/html/hamkelasi/middlewares/index.js:736:5)
   at Layer.handle [as handle_request] (/var/www/html/hamkelasi/node_modules/express/lib/router/layer.js:95:5)
   at next (/var/www/html/hamkelasi/node_modules/express/lib/router/route.js:137:13)
   at dailyJson (/var/www/html/hamkelasi/middlewares/index.js:732:5)
   at Layer.handle [as handle_request] (/var/www/html/hamkelasi/node_modules/express/lib/router/layer.js:95:5)
   at next (/var/www/html/hamkelasi/node_modules/express/lib/router/route.js:137:13)
   at Route.dispatch (/var/www/html/hamkelasi/node_modules/express/lib/router/route.js:112:3)
   at Layer.handle [as handle_request] (/var/www/html/hamkelasi/node_modules/express/lib/router/layer.js:95:5)
   at /var/www/html/hamkelasi/node_modules/express/lib/router/index.js:281:22
   at param (/var/www/html/hamkelasi/node_modules/express/lib/router/index.js:354:14)
   at param (/var/www/html/hamkelasi/node_modules/express/lib/router/index.js:365:14)
   at Function.process_params (/var/www/html/hamkelasi/node_modules/express/lib/router/index.js:410:3)
   at next (/var/www/html/hamkelasi/node_modules/express/lib/router/index.js:275:10)
   at Function.handle (/var/www/html/hamkelasi/node_modules/express/lib/router/index.js:174:3)
   at router (/var/www/html/hamkelasi/node_modules/express/lib/router/index.js:47:12)
   at Layer.handle [as handle_request] (/var/www/html/hamkelasi/node_modules/express/lib/router/layer.js:95:5)