Erro na aplicação

Tipo: Error

Mensagem: Call to undefined method App\Controllers\ProposalsController::render()

Arquivo: /home/doost/htdocs/doost.cloud/app/Controllers/ProposalsController.php

Linha: 21

Stack Trace:

#0 [internal function]: App\Controllers\ProposalsController->index()
#1 /home/doost/htdocs/doost.cloud/app/Core/Application.php(111): call_user_func_array()
#2 /home/doost/htdocs/doost.cloud/app/Core/Application.php(54): App\Core\Application->executeRoute()
#3 /home/doost/htdocs/doost.cloud/index.php(18): App\Core\Application->run()
#4 {main}