React-native-fetch-blob: Error calling RCTDeviceEventEmitter.emit failed to create value from json

[NarendraSingh88]

Here is my file downloading code as below -

async downloadFile(fileURL) {
    const timeout = new Promise((resolve, reject) => {
      setTimeout(reject, 5000, "Request timed out");
    });

    **_const request = fetch(fileURL);_**

    return Promise.race([timeout, request])
      .then(response => {
        // alert(JSON.stringify(response, null, 4));
        if (response.status !== 404) {
          var filename = fileURL.substring(fileURL.lastIndexOf("/") + 1);

          const { config, fs } = RNFetchBlob;
          let DownloadDir = fs.dirs.DownloadDir;
          let options = {
            fileCache: true,
            addAndroidDownloads: {
              useDownloadManager: true, // setting it to true will use the device's native download manager and will be shown in the notification bar.
              notification: false,
              path: DownloadDir + "/MyApp/" + filename, // this is the path where your downloaded file will live in
              description: "Downloading Payslip."
            }
          };
          RNFetchBlob.config(options)
            .fetch("GET", fileURL, {})
            .then(res => {
              // the path should be dirs.DocumentDir + 'path-to-file.anything'
              alert("The file saved to " + res.path());
            })
            .catch((errorMessage, statusCode) => {
              // This is never hit for a server 404 error
              console.log(errorMessage, statusCode);
              Alert.alert(
                "MyApp",
                "Payslip not available.",
                [{ text: "OK" }],
                { cancelable: true }
              );
            });
        } else {
          Alert.alert(
            "MyApp",
            "Payslip not available.",
            [{ text: "OK" }],
            { cancelable: true }
          );
        }
      })
      .catch(error => {
        Alert.alert(
          "MyApp",
          "Payslip not available.",
          [{ text: "OK" }],
          {
            cancelable: true
          }
        );
      });

    return;
  }

I am getting the above error on the highlighted line , i.e, as below

const request = fetch(fileURL);

The error, I am getting in log is as follow -

07-25 10:44:15.128 9695-9732/com.MyApp E/unknown:ReactNative: Exception in native call
    java.lang.RuntimeException: Error calling RCTDeviceEventEmitter.emit
        at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
        at android.os.Handler.handleCallback(Handler.java:789)
        at android.os.Handler.dispatchMessage(Handler.java:98)
        at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29)
        at android.os.Looper.loop(Looper.java:164)
        at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:192)
        at java.lang.Thread.run(Thread.java:764)
     Caused by: com.facebook.jni.CppException: Failed to create Value from JSON: 
        at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method) 
        at android.os.Handler.handleCallback(Handler.java:789) 
        at android.os.Handler.dispatchMessage(Handler.java:98) 
        at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29) 
        at android.os.Looper.loop(Looper.java:164) 
        at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:192) 
        at java.lang.Thread.run(Thread.java:764) 

I double-checked the url and it seems fine, and file is getting downloaded as well.

[zolaahihi]

Hello,

What is your problem? and how can you fix it?

Can you share information @NarendraSingh88 :)

[ibrhmckc]

i get this error only when i disable debug mode. There is no error on debug mode on android emulator . So i cannot find where is the error. somebody can help?

[witalobenicio]

@NarendraSingh88 how did you fixed it?