Uncaught (in promise) error: a listener indicated an asynchronous response by returning true, but the message channel closed before a response was received

Explanation of “uncaught (in promise)” Error with Examples

The “uncaught (in promise)” error occurs in JavaScript when a Promise is rejected, and there is no corresponding .catch() or .then() callback to handle the rejection.

Here is an example of a Promise that throws an error:

    
      const promise = new Promise((resolve, reject) => {
        reject(new Error("Something went wrong"));
      });
      
      promise.then(() => {
        console.log("Success!");
      });
    
  

In this example, the Promise is explicitly rejected using the reject() function, and it is not handled with a .catch() or .then() callback. As a result, the “uncaught (in promise)” error will be thrown.

To fix this error, you can add a .catch() callback to handle the rejected Promise:

    
      const promise = new Promise((resolve, reject) => {
        reject(new Error("Something went wrong"));
      });
      
      promise.catch((error) => {
        console.error(error);
      });
    
  

In this updated example, the .catch() callback is added to handle the error. Now, when the Promise is rejected, the error will be logged to the console instead of throwing an “uncaught (in promise)” error.

It’s important to always handle Promise rejections to prevent the “uncaught (in promise)” error from occurring, as unhandled Promise rejections can lead to undesired behavior and make debugging more difficult.