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Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0 #1

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Kathou99 opened this issue Jul 2, 2022 · 2 comments
Open

Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0 #1

Kathou99 opened this issue Jul 2, 2022 · 2 comments

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@Kathou99
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Kathou99 commented Jul 2, 2022 •
edited
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Hi, When I click submit I got this error,how I can fix it? I have write the same thing has your....

I have added isCaptchaValid(true); for my custom script

And on my side I run on the port 3000 not 4000

const submitData = token => {
      // call a backend API to verify reCAPTCHA response
      fetch('http://localhost:3000/verify', {
        method: 'POST',
        headers: {
          "Content-Type": "application/json"
          
        },
        body: JSON.stringify({
        
          "name": inputName,
          "inputEmail": inputEmail,
          "g-recaptcha-response": token
        })
      }).then(res => res.json()).then(res => {
        isCaptchaValid(true);
        setLoading(false);
        setResponse(res);
      });
    }

This is the error:

<html>
<body>
<!--StartFragment-->

  | Promise.then (async) |   |  
-- | -- | -- | --
  | submitData | @ | form.js:92
  | (anonymous) | @ | form.js:73
  | Promise.then (async) |   |  
  | then | @ | recaptcha__fr.js:172
  | (anonymous) | @ | form.js:72
  | setTimeout (async) |   |  
  | (anonymous) | @ | recaptcha__fr.js:137
  | (anonymous) | @ | recaptcha__fr.js:28
  | handleOnClick | @ | form.js:71
  | callCallback | @ | react-dom.development.js:4111
  | invokeGuardedCallbackDev | @ | react-dom.development.js:4160
  | invokeGuardedCallback | @ | react-dom.development.js:4222
  | invokeGuardedCallbackAndCatchFirstError | @ | react-dom.development.js:4237
  | executeDispatch | @ | react-dom.development.js:9066
  | processDispatchQueueItemsInOrder | @ | react-dom.development.js:9098
  | processDispatchQueue | @ | react-dom.development.js:9111
  | dispatchEventsForPlugins | @ | react-dom.development.js:9122
  | (anonymous) | @ | react-dom.development.js:9314
  | batchedUpdates$1 | @ | react-dom.development.js:25909
  | batchedUpdates | @ | react-dom.development.js:3937
  | dispatchEventForPluginEventSystem | @ | react-dom.development.js:9313
  | dispatchEventWithEnableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay | @ | react-dom.development.js:6489
  | dispatchEvent | @ | react-dom.development.js:6481
  | dispatchDiscreteEvent | @ | react-dom.development.js:6454

<!--EndFragment-->
</body>
</html>
@cluemediator
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In the code, http://localhost:4000/verify is the endpoint of the backend service. The backend API is required to verify the captcha. Please have a look.

https://www.cluemediator.com/how-to-verify-google-recaptcha-v3-response

@Kathou99
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Kathou99 commented Jul 5, 2022

So I need to run another react server or I can integrate with my react app the server.js?

I used the external Cors

https://github.com/cluemediator/verify-recaptcha-v3-nodejs

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@cluemediator @Kathou99