No momento de testar a API, na aula (Testando o cadastro com o Postman) recebo um 200 com um arquivo html, tanto no GET quanto no POST.
{
"titulo": "Dúvida Postman",
"mensagem": "Texto da mensagem",
"nomeCurso": "Spring Boot"
}
<head prefix="og: http://ogp.me/ns#">
<meta charset="utf-8">
<link as="style"
href="http://localhost:8090/assets/application-a0c92bafde7d93e87af3bc2797125cba613018240a9f5305ff949be8a1b16528.css"
rel="preload">
<link as="style"
href="http://localhost:8090/assets/highlight/themes/white-aa4568025f9b4ea36b357bdccb95c9138a515f1e611b59f20a1777a68b6995db.css"
rel="preload">
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<meta content="object" property="og:type">
<meta content="GitLab" property="og:site_name">
<meta content="" property="og:title">
<meta content="GitLab Community Edition" property="og:description">
<meta
content="http://localhost:8090/assets/gitlab_logo-7ae504fe4f68fdebb3c2034e36621930cd36ea87924c11ff65dbcb8ed50dca58.png"
property="og:image">
<meta content="64" property="og:image:width">
<meta content="64" property="og:image:height">
<meta content="http://localhost:8090/users/password/edit?reset_password_token=Dz_Jt_3Re1h27LWGrqt9"
property="og:url">
<meta content="summary" property="twitter:card">
<meta content="" property="twitter:title">
<meta content="GitLab Community Edition" property="twitter:description">
<meta
content="http://localhost:8090/assets/gitlab_logo-7ae504fe4f68fdebb3c2034e36621930cd36ea87924c11ff65dbcb8ed50dca58.png"
property="twitter:image">
<title>GitLab</title>
<meta content="GitLab Community Edition" name="description">
<link rel="shortcut icon" type="image/png"
href="/assets/favicon-7901bd695fb93edb07975966062049829afb56cf11511236e61bcf425070e36e.png" id="favicon"
data-original-href="/assets/favicon-7901bd695fb93edb07975966062049829afb56cf11511236e61bcf425070e36e.png" />
<link rel="stylesheet" media="all"
href="/assets/application-a0c92bafde7d93e87af3bc2797125cba613018240a9f5305ff949be8a1b16528.css" />
<link rel="stylesheet" media="all"
href="/assets/application_utilities-753570944e7deb9f70dcaa57c9f92d06ebc295af72460c6770c4ccb2b49069a9.css" />
<link rel="stylesheet" media="all"
href="/assets/themes/theme_indigo-190bf26ce6f97432bbca6d74618009b7eb07738094143cefed5cb9856d26f9e7.css" />
<link rel="stylesheet" media="all"
href="/assets/highlight/themes/white-aa4568025f9b
