app.model.PagamentoDao is not a constructor

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TypeError: app.model.PagamentoDao is not a constructor
    at C:\Users\c1297712\WebstormProjects\untitled2\app\controllers\pagamentos.js:6:28
    at Layer.handle [as handle_request] (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\layer.js:95:5)
    at C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\index.js:335:12)
    at next (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\index.js:275:10)
    at jsonParser (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\body-parser\lib\types\json.js:110:7)
    at Layer.handle [as handle_request] (C:\Users\c1297712\WebstormProjects\untitled2\node_modules\express\lib\router\layer.js:95:5)