Guacamole `Invalid Login` error

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1

With the following configuration, attempting to log in to Apache Guacamole with the specified username and “password” gives me an Invalid Login error:

<?xml version="1.0" encoding="UTF-8"?>
<user-mapping>
    <!-- User using SHA-256 to hash the password -->
    <authorize
        username="syvlorg"
        password="...">

        <connection name="NixOS Server Tailscale SSH">
            <protocol>ssh</protocol>
            <param name="hostname">127.0.0.1</param>
            <param name="port">22</param>
        </connection>

        <connection name="NixOS Server SSH">
            <protocol>ssh</protocol>
            <param name="hostname">127.0.0.1</param>
            <param name="port">8022</param>
        </connection>

      <connection name="NixOS Server RDP">
          <protocol>rdp</protocol>
          <param name="hostname">127.0.0.1</param>
          <param name="port">3389</param>
          <param name="ignore-cert">true</param>
      </connection>
    </authorize>
</user-mapping>

I was attempting to follow this tutorial.