My front-end is not communicating with the Back-End

Question

I created a simple form in React to communicate with the back-end (Node js), but when I click the form button (this button has an event that is responsible for performing the request to the back-end gives the following message: "Failed to load Resource: net::ERR_SSL_PROTOCOL_ERROR"

onClick = (event) => {
  httRequest.open('GET', 'https://localhost:5000', true);

  httRequest.onreadystatechange = function() {
    if ( httRequest.readyState === 4 ){
      if ( httRequest.status === 200 ) 
        console.log(httRequest.responseText)
      else
        console.log('Some error in httRequest.readyState == 200')
    } else
      console.log('Error in the if == 4')
  }
  httRequest.send();
}

Basically, when called the event, he should request the address quoted. But every time I select the button it drops in the condition below:

console.log('Some error in httRequest.readyState == 200')