Boa noite, estou tendo problema para adicionar pessoas. irei mandar o erro que estar dando no console e meu código javaScript e HTML estou usando o Bootstrap4 para criar a listas
HTML
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="teste2.css">
</head>
<body>
<tbody id="tabela-alunos">
<ul class="list-group lista2 alunos">
<li class="list-group-item lista">Lucas</li>
<li class="list-group-item lista">Pedro</li>
<li class="list-group-item lista">Amanda</li>
<li class="list-group-item lista">Ana</li>
<li class="list-group-item lista">Tainá</li>
</ul>
</tbody>
<form id="form-adicionar">
<div class="grupo">
<label for="nome">Nome:</label>
<input id="nome" name="nome" type="text" placeholder="digite o nome" class="campo">
</div>
<button id="adicionar-paciente" type="button" class="btn btn-primary botao" >Adicionar Aluno Novo</button>
</form>
<script src="index.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>JS
var botaoAdicionar = document.querySelector("#adicionar-paciente");
botaoAdicionar.addEventListener("click", function(event){
event.preventDefault();
var form = document.querySelector("#form-adicionar");
var nome = form.nome.value;
var alunosUl = document.createElement("ul");
var nomeLi = document.createElement("li");
nomeLi.textContent = nome;
alunosUl.appendChild(nomeLi)
var tabela = document.querySelector("#tabela-alunos");
tabela.appendChild(alunosUl);
});fiz o máximo parecido com o do professor mas estar dando erro
a foto do console estar nesse link é a unica foto que tem lá.
