Provider: SQL Network Interfaces, error: 26 - Error Locating Server/Specified Instance

Question

Hello friends, I am making a web application with Entityframework using Codefirst and every time I try to access, add or edit data has given the error below.

Can anyone help me? I work with Entityframework a short time and I am very inexperienced, I can’t find out where the error is. Follows the connectionString used.

    <connectionStrings>
        <add name="ProjetoRH" connectionString="Data Source=(localdb)\MSSQLLocalDB;Initial Catalog=SistemaRh;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False" providerName="System.Data.SqlClient"/>
     </connectionStrings>

Thank you very much in advance