Error reading server preface

Miscellaneous
13

This is the startup log.:

Blockchain is running

:bust_in_silhouette: alice’s account address: cosmos1gm854qshrd22dj9lrj26sqmvw0at2tr5jqzpmk
:bust_in_silhouette: bob’s account address: cosmos1nufjqs3qqaj7hhcegtktffyjxvt9es4fecn4l8

:globe_showing_europe_africa: Tendermint node: 0.0.0.0:26657
:globe_showing_europe_africa: Blockchain API: 0.0.0.0:1317
:globe_showing_europe_africa: Token faucet: 0.0.0.0:4500

⋆ Data directory: /home/mohuang/.checkers
⋆ App binary: /home/mohuang/go/bin/checkersd

This is a port check:

root@node01:/home/mohuang/sdk# lsof -i:1317
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
checkersd 176978 mohuang 36u IPv6 288642 0t0 TCP *:1317 (LISTEN)
root@node01:/home/mohuang/sdk# lsof -i:9090
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
checkersd 176978 mohuang 37u IPv6 291969 0t0 TCP *:9090 (LISTEN)

This is the result of the address access:

root@node01:/home/mohuang/sdk# curl -v localhost:1317/swagger/

  • Host localhost:1317 was resolved.
  • IPv6: ::1
  • IPv4: 127.0.0.1
  • Trying [::1]:1317…
  • Connected to localhost (::1) port 1317
  • using HTTP/1.x

GET /swagger/ HTTP/1.1
Host: localhost:1317
User-Agent: curl/8.14.1
Accept: /

  • Request completely sent off
    < HTTP/1.1 200 OK
    < Accept-Ranges: bytes
    < Content-Length: 1466
    < Content-Type: text/html; charset=utf-8
    < X-Server-Time: 1763111272
    < Date: Fri, 14 Nov 2025 09:07:52 GMT
    <
Swagger UI html { box-sizing: border-box; overflow: -moz-scrollbars-vertical; overflow-y: scroll; } 
  *,
  *:before,
  *:after
  {
    box-sizing: inherit;
  }

  body
  {
    margin:0;
    background: #fafafa;
  }
</style>

<script src="./swagger-ui-bundle.js" charset="UTF-8"> </script>
<script src="./swagger-ui-standalone-preset.js" charset="UTF-8"> </script>
<script>
window.onload = function() {
  // Begin Swagger UI call region
  const ui = SwaggerUIBundle({
    url: "./swagger.yaml",
    dom_id: '#swagger-ui',
    deepLinking: true,
    queryConfigEnabled: false,
    presets: [
      SwaggerUIBundle.presets.apis,
      SwaggerUIStandalonePreset
    ],
    plugins: [
      SwaggerUIBundle.plugins.DownloadUrl
    ],
    layout: "StandaloneLayout"
  });
  // End Swagger UI call region

  window.ui = ui;
};
* Connection #0 to host localhost left intact