/go

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  const id = params.get("id");

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    "1": "https://g.page/r/CUSTOMER_LINK_1",
    "2": "https://g.page/r/CUSTOMER_LINK_2",
    "3": "https://g.page/r/CUSTOMER_LINK_3"
  };

  if (redirects[id]) {
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    document.body.innerHTML = "Invalid QR code.";
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</script>