MuntashirAkon/AppManager · error · FileNotFoundException

Fetch error:

Error message

Fetch error: 

What it means

VirusTotal.fetchFileReportOrScan fetches a file report and, when no report exists and the response is neither queued nor retryable, throws FileNotFoundException("Fetch error: " + responseReport.error). It signals the VT lookup definitively failed (e.g. quota/auth errors) with no retry path.

Solutions

1. Read the appended responseReport.error in the message to identify the VT error code and fix the cause (API key, quota).
2. Verify the VirusTotal API key in App Manager settings is valid.
3. Retry later if the error indicates quota exhaustion; consider a premium key for higher limits.
4. Catch FileNotFoundException around the call and show the error instead of crashing the scanner flow.

Example fix

// before
VtFileReport report = vt.fetchFileReportOrScan(file); // throws
// after
try {
    VtFileReport report = vt.fetchFileReportOrScan(file);
} catch (FileNotFoundException e) {
    Log.w(TAG, "VT lookup failed: " + e.getMessage());
}

// Verify the API key before scanning:
if (apiKey == null || apiKey.isEmpty()) {
    throw new IllegalStateException("VirusTotal API key not configured.");
}

try {
    VtFileReport r = vt.fetchFileReportOrScan(file);
} catch (FileNotFoundException e) {
    Log.w(TAG, "VT fetch failed: " + e.getMessage()); // message contains VT error
}

When it happens

Trigger: Calling fetchFileReportOrScan when the VT API returns a non-recoverable error (invalid API key, exceeded quota, request refused) such that responseReport.shouldRetry() is false and the report is not queued.

Common situations: Expired or missing VirusTotal API key; daily/public-API rate quota exhausted; VT service error responses.

Related errors

• File not found in VirusTotal.
• Scan error:
• ADB daemon not running.
• APK is larger than 650 MB.
• Could not connect to ADB.

AI-assisted analysis of MuntashirAkon/AppManager@0152f468fc (2026-09-12). Data as JSON: /api/errors/5828c71d7f8a4367. Report an issue: GitHub.

Appendix: source

Thrown at app/src/main/java/io/github/muntashirakon/AppManager/scanner/vt/VirusTotal.java:117

    public VirusTotal(@NonNull String apiKey) {
        mApiKey = Objects.requireNonNull(apiKey);
    }

    public void fetchFileReportOrScan(@NonNull Path file,
                                      @NonNull String checksum,
                                      @NonNull FullScanResponseInterface response)
            throws IOException {
        ResponseV3<VtFileReport> responseReport = fetchFileReport(checksum);
        if (responseReport.response != null && responseReport.response.hasReport()) {
            // A report is found
            response.onReportReceived(responseReport.response);
            return;
        }
        // No report found: either failed or still queued
        boolean queued = responseReport.response != null && !responseReport.response.hasReport();
        if (!queued && !responseReport.shouldRetry()) {
            // Retry is not available
            throw new FileNotFoundException("Fetch error: " + responseReport.error);
        }
        // Scan or retry
        VtError error = Objects.requireNonNull(responseReport.error);
        boolean waitFirst = false;
        if ("NotFoundError".equals(error.code)) {
            // Initiate scan
            if (!response.uploadFile()) {
                // Scanning disabled
                throw new FileNotFoundException("File not found in VirusTotal.");
            }
            waitFirst = true;
            PowerManager.WakeLock wakeLock = CpuUtils.getPartialWakeLock("vt_upload");
            wakeLock.acquire();
            try {
                long fileSize = file.length();
                if (fileSize > 650_000_000) {
                    throw new IOException("APK is larger than 650 MB.");
                }

View on GitHub (pinned to 0152f468fc)