Erro 403 Query did not return a unique result: 2 results were returned

Hibernate: 
    select
        u1_0.id,
        u1_0.login,
        u1_0.senha 
    from
        usuarios u1_0 
    where
        u1_0.login=?
Hibernate: 
    select
        count(*) 
    from
        pacientes p1_0 
    where
        p1_0.id=?
Hibernate: 
    select
        c1_0.id 
    from
        consultas c1_0 
    where
        c1_0.medico_id is null 
        and c1_0.data=? 
    fetch
        first ? rows only
Hibernate: 
    select
        p1_0.ativo 
    from
        pacientes p1_0 
    where
        p1_0.id=?
Hibernate: 
    select
        c1_0.id 
    from
        consultas c1_0 
    where
        c1_0.paciente_id=? 
        and c1_0.data between ? and ? 
    fetch
        first ? rows only
Hibernate: 
    select
        m1_0.id,
        m1_0.ativo,
        m1_0.crm,
        m1_0.email,
        m1_0.bairro,
        m1_0.cep,
        m1_0.cidade,
        m1_0.complemento,
        m1_0.logradouro,
        m1_0.numero,
        m1_0.uf,
        m1_0.especialidade,
        m1_0.nome,
        m1_0.telefone 
    from
        medicos m1_0 
    where
        m1_0.ativo=1 
        and m1_0.especialidade=? 
        and m1_0.id not in (select
            c1_0.medico_id 
        from
            consultas c1_0 
        where
            c1_0.data=?)
2023-12-23T17:53:51.396-03:00 ERROR 14412 --- [nio-8080-exec-8] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.springframework.dao.IncorrectResultSizeDataAccessException: Query did not return a unique result: 2 results were returned] with root cause

org.hibernate.NonUniqueResultException: Query did not return a unique result: 2 results were returned