Gitlab.com API returning 526 error "The origin web server does not have a valid SSL certificate."

How to Use GitLab
1

Happening across multiple API keys. Cloudflare Location: Newark.

Example Gitlab v4 API response:

GitlabListError: 526: <!DOCTYPE html>
<html>
<head>
  <meta content="width=device-width, initial-scale=1, maximum-scale=1" name="viewport">
  <title>500 Error</title>
  <style>body{align-items:center;color:#666;display:flex;flex-direction:column;font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:14px;justify-content:center;margin:auto;text-align:center}hr{border:0;border-bottom:1px solid #fff;border-top:1px solid #eee;margin:18px auto;max-width:800px}img{max-width:40vw}.container{margin:auto 20px}.cferror_details{list-style-type:none}.cf-error-details h1{color:#456;font-size:20px;font-weight:400;line-height:28px}</style>


</head>

<body>
  <h1>
    <img src="data:image/svg+xml;base64,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" alt="GitLab Logo" /><br />
  </h1>
  <div class="container">
    <div class="cf-error-details cf-error-526">
  <h1>Invalid SSL certificate</h1>
  <p>The origin web server does not have a valid SSL certificate.</p>
  <ul class="cferror_details">
    <li>Ray ID: 5920483e3ca3e714</li>
....
2

I had the same issue earlier when trying to pull from the container registry or git, and it didn’t show up on https://status.gitlab.com/ either.