Error: Please try again later 503

[it-dalilk]

Hi,
Which Deepgram product are you using?
Deepgram API

Details
I am having multiple issues.
1- I send the audio file in the body as body: mp3Blob. However, my clients are encountering "Error: Please try again later",
what's the cause of that?
2- some of my clients are getting empty text responses and sometimes they get error 400 or 408 for some of their recordings, which means that the audio file should be fine.

If you are making a request to the Deepgram API, what is the full Deepgram URL you are making a request to?
https://api.deepgram.com/v1/listen?smart_format=true&model=nova-2-conversationalai&language=en-US

If you are making a request to the Deepgram API and have a request ID, please paste it below:
eb5a1d9f-1b86-4db2-a868-2e90f9158fb9

If possible, please attach your code or paste it into the text box.

  function startRecording() {
        if (!isRecording) {
            navigator.mediaDevices.getUserMedia({
                audio: true
            })
                .then(stream => {
                    resetConvButton.disabled = true
                    isRecording = true;
                    mediaStream = stream;
                    // check if media recorder is supported
                    if (!MediaRecorder.isTypeSupported(recordType)) {
                        alert("Your browser is not supported");
                        return;
                    }
                    mediaRecorder = new MediaRecorder(stream, {
                        mimeType: recordType
                    });
                    mediaRecorder.ondataavailable = event => {
                        audioChunks.push(event.data);
                    };
                    mediaRecorder.onstop = processRecording;
                    mediaRecorder.start();
                    startButton.classList.add("d-none");
                    stopButton.classList.remove("d-none");
                    stopButton.style.animation = "pulse 2s infinite";
                })
                .catch(err => {
                    alert("Please give the website access to microphone");
                    reportError(email, "Recording not allowed\nError: " + err);
                });
        }
    }

    function stopRecording() {
        if (mediaRecorder && isRecording) {
            mediaRecorder.stop();
            startButton.classList.add("d-none");
            stopButton.classList.add("d-none");
            isRecording = false;

            mediaRecorder.stop();
            voiceLoader.show();
            voiceText.show();
            voiceText.children("p").remove();
        }
    }
    function resetRecording() {
        if (mediaStream) {
            mediaStream.getTracks().forEach(track => track.stop());
            mediaStream = null;
        }
        startButton.classList.remove("d-none");
        stopButton.classList.add("d-none");
        submitButton.classList.add("d-none");
        resetButton.classList.add("d-none");
        $("#audio-container-student").hide().html("");
        resetConvButton.disabled = false;
        voiceLoader.hide();
        voiceText.hide();
        voiceText.children("p").remove();
    }

    async function processRecording() {
        mp3Blob = new Blob(audioChunks, { type: "audio/mp3" });
        const audioUrl = URL.createObjectURL(mp3Blob);
        const audio = document.createElement("audio");
        const controlButton = document.createElement("button");
        const audioContainer = document.getElementById("audio-container-student");

        audio.src = audioUrl;
        audio.preload = "auto";
        audio.muted = false;
        audio.classList.add("d-none");
        audio.addEventListener("ended", function () {
            controlButton.innerHTML = "<i class='fa fa-play'></i>";
        });

        controlButton.style.cursor = "pointer";
        controlButton.classList.add("control-button");
        controlButton.style.background = "none"
        controlButton.style.padding = "5px 5px 0px 10px";
        controlButton.style.border = "none";
        controlButton.style.color = "#29a59a";
        controlButton.innerHTML = "<i class='fa fa-play'></i>";

        audioContainer.style.display = "flex";
        audioContainer.append(audio);
        audioContainer.append(controlButton);

        controlButton.addEventListener("click", function () {
            // get this elementt sibling audio by parent
            let siblingAudio = this.parentElement.querySelector("audio");
            if (siblingAudio.paused) {
                siblingAudio.play();
                controlButton.innerHTML = "<i style='color: red;' class='fa fa-pause'></i>";
            } else {
                siblingAudio.pause();
                controlButton.innerHTML = "<i class='fa fa-play'></i>";
            }
        });
        submitRecording();

        // Reset audio chunks for the next recording
        audioChunks = [];

        mediaStream.getTracks().forEach(track => track.stop());
        mediaStream = null;
    }
await fetch("https://api.deepgram.com/v1/listen?smart_format=true&model=nova-2-conversationalai&language=en-US", {
                    method: "POST",
                    body: mp3Blob,
                    headers: {
                        "Authorization": "Token MY_API_KEY",
                        "content-type": "audio/mpeg"
                    }
                }).then(response => {
                    if (response.ok) {
                        return response.json();
                    } else {
                        if (deepgramRetryCount < deepgramMaxRetries) {
                            deepgramRetryCount++;
                            reportError(email, `Deepgram API Retry ${deepgramRetryCount} \n` + JSON.stringify(response) + "\n status: " + response.status);
                           setTimeout(retrySubmission, deepgramRetryCount * 5000);
                        } else {
                            reportError(email, `Deepgram API Gave Up \n` + JSON.stringify(response) + "\n status: " + response.status);
                            submitRecordingToWhisper();
                        }
                    }
                })
                    .then(data => {
                        if (data.error) {
                            reportError(email, `Deepgram API Error \n` + JSON.stringify(data) + "\n status: " + response.status);
                        }
                        if (!data.results) {
                            reportError(email, `Deepgram API response no result \n` + JSON.stringify(data) + "\n status: " + response.status);
                            submitRecordingToWhisper();
                        } else {
                            handleDeepgramSuccess(data);
                        }
                    }).catch(error => {
                        reportError(email, `Deepgram API response ${error}`);
                        if (deepgramRetryCount < deepgramMaxRetries) {
                            deepgramRetryCount++;
                            retrySubmission();
                        } else {
                            submitRecordingToWhisper();
                        }
                    });

If possible, please attach an example audio file to reproduce the issue.
I am using the JavaScript MediaRecorder library for recording audio on the client side and then I send it to Deepgram API.

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