getMFHoldings API call broken due to content-type error

dhrutikpatel
When calling the `getMFHoldings()` method from the Kite Connect SDK in the following endpoint:

```js
app.get("/api/v1/mutualfunds", ensureToken, async (req, res) => {
try {
const kc = getKiteClientWithToken();
const mfHoldings = await kc.getMFHoldings();
res.json(mfHoldings);
} catch (err) {
console.error("❌ Error fetching mutual funds:", JSON.stringify(err, null, 2));
res.status(500).send("Failed to fetch mutual funds");
}
});
```

the request results in the following error:

```
{"error_type":"DataException","message":"Unknown content type (application/json;charset=utf-8) with response: ([object Object])"}
```
  • Nivas
    Nivas edited 10:46AM
    Can you enable the debug logs of kiteconnectjs and the complete stack trace here?
    You can enable debug logs as mentioned here.

    PS: Make sure to remove app and client-specific tokens while pasting here.
  • dhrutikpatel
    Since, it is not an error rather it is a wrong response.

    {
    "error_type": "DataException",
    "message": "Unknown content type (application/json;charset=utf-8) with response: ([object Object])"
    }

    I am not able to see any error on terminal while hitting this API.

    CAN YOU CHECK ON YOUR END, THIS API WORK FOR YOU OR NOT?


    {
    url: '/mf/holdings',
    method: 'get',
    data: null,
    headers: {
    common: { Accept: 'application/json, text/plain, */*' },
    delete: {},
    get: {},
    head: {},
    post: { 'Content-Type': 'application/x-www-form-urlencoded' },
    put: { 'Content-Type': 'application/x-www-form-urlencoded' },
    patch: { 'Content-Type': 'application/x-www-form-urlencoded' },
    'X-Kite-Version': 3,
    'User-Agent': 'kiteconnectjs/5.0.1',
    Authorization: '',
    'Content-Type': 'application/x-www-form-urlencoded'
    },
    params: {},
    baseURL: 'https://api.kite.trade',
    transformRequest: [ [Function: transformRequest] ],
    transformResponse: [ [Function: transformResponse] ],
    paramsSerializer: [Function: paramsSerializer],
    timeout: 7000,
    adapter: [Function: httpAdapter],
    xsrfCookieName: 'XSRF-TOKEN',
    xsrfHeaderName: 'X-XSRF-TOKEN',
    maxContentLength: -1,
    maxBodyLength: -1,
    validateStatus: [Function: validateStatus],
    transitional: {
    silentJSONParsing: true,
    forcedJSONParsing: true,
    clarifyTimeoutError: false
    }
    }
    {
    status: 200,
    statusText: 'OK',
    headers: {
    date: 'Mon, 07 Jul 2025 11:05:58 GMT',
    'content-type': 'application/json;charset=utf-8',
    'transfer-encoding': 'chunked',
    connection: 'keep-alive',
    'x-frame-options': 'DENY',
    'x-xss-protection': '1; mode=block',
    vary: 'Accept-Encoding',
    'access-control-allow-origin': '*',
    'cf-cache-status': 'DYNAMIC',
    'strict-transport-security': 'max-age=15552000; includeSubDomains',
    'set-cookie': [
    '_cfuvid= path=/; domain=.kite.trade; HttpOnly; Secure; SameSite=None'
    ],
    server: 'cloudflare',
    'cf-ray': '',
    'alt-svc': 'h3=":443"; ma=86400'
    },
    config: {
    url: '/mf/holdings',
    method: 'get',
    data: null,
    headers: {
    Accept: 'application/json, text/plain, */*',
    'X-Kite-Version': 3,
    'User-Agent': 'kiteconnectjs/5.0.1',
    Authorization: '',
    'Content-Type': 'application/x-www-form-urlencoded'
    },
    params: {},
    baseURL: 'https://api.kite.trade',
    transformRequest: [ [Function: transformRequest] ],
    transformResponse: [ [Function: transformResponse] ],
    paramsSerializer: [Function: paramsSerializer],
    timeout: 7000,
    adapter: [Function: httpAdapter],
    xsrfCookieName: 'XSRF-TOKEN',
    xsrfHeaderName: 'X-XSRF-TOKEN',
    maxContentLength: -1,
    maxBodyLength: -1,
    validateStatus: [Function: validateStatus],
    transitional: {
    silentJSONParsing: true,
    forcedJSONParsing: true,
    clarifyTimeoutError: false
    }
    },
    request: ClientRequest {
    _events: [Object: null prototype] {
    abort: [Function (anonymous)],
    aborted: [Function (anonymous)],
    connect: [Function (anonymous)],
    error: [Function (anonymous)],
    socket: [Function (anonymous)],
    timeout: [Function (anonymous)],
    finish: [Function: requestOnFinish]
    },
    _eventsCount: 7,
    _maxListeners: undefined,
    outputData: [],
    outputSize: 0,
    writable: true,
    destroyed: true,
    _last: true,
    chunkedEncoding: false,
    shouldKeepAlive: true,
    maxRequestsOnConnectionReached: false,
    _defaultKeepAlive: true,
    useChunkedEncodingByDefault: false,
    sendDate: false,
    _removedConnection: false,
    _removedContLen: false,
    _removedTE: false,
    strictContentLength: false,
    _contentLength: 0,
    _hasBody: true,
    _trailer: '',
    finished: true,
    _headerSent: true,
    _closed: true,
    _header: 'GET /mf/holdings HTTP/1.1\r\n' +
    'Accept: application/json, text/plain, */*\r\n' +
    'X-Kite-Version: 3\r\n' +
    'User-Agent: kiteconnectjs/5.0.1\r\n' +
    'Authorization:
    _keepAliveTimeout: 0,
    _onPendingData: [Function: nop],
    agent: Agent {
    _events: [Object: null prototype],
    _eventsCount: 2,
    _maxListeners: undefined,
    defaultPort: 443,
    protocol: 'https:',
    options: [Object: null prototype],
    requests: [Object: null prototype] {},
    sockets: [Object: null prototype] {},
    freeSockets: [Object: null prototype],
    keepAliveMsecs: 1000,
    keepAlive: true,
    maxSockets: Infinity,
    maxFreeSockets: 256,
    scheduling: 'lifo',
    maxTotalSockets: Infinity,
    totalSocketCount: 1,
    maxCachedSessions: 100,
    _sessionCache: [Object],
    [Symbol(shapeMode)]: false,
    [Symbol(kCapture)]: false
    },
    socketPath: undefined,
    method: 'GET',
    maxHeaderSize: undefined,
    insecureHTTPParser: undefined,
    joinDuplicateHeaders: undefined,
    path: '/mf/holdings',
    _ended: true,
    res: IncomingMessage {
    _events: [Object],
    _readableState: [ReadableState],
    _maxListeners: undefined,
    socket: null,
    httpVersionMajor: 1,
    httpVersionMinor: 1,
    httpVersion: '1.1',
    complete: true,
    rawHeaders: [Array],
    rawTrailers: [],
    joinDuplicateHeaders: undefined,
    aborted: false,
    upgrade: false,
    url: '',
    method: null,
    statusCode: 200,
    statusMessage: 'OK',
    client: [TLSSocket],
    _consuming: true,
    _dumped: false,
    req: [Circular *1],
    _eventsCount: 3,
    responseUrl: 'https://api.kite.trade/mf/holdings',
    redirects: [],
    [Symbol(shapeMode)]: true,
    [Symbol(kCapture)]: false,
    [Symbol(kHeaders)]: [Object],
    [Symbol(kHeadersCount)]: 28,
    [Symbol(kTrailers)]: null,
    [Symbol(kTrailersCount)]: 0
    },
    aborted: false,
    timeoutCb: null,
    upgradeOrConnect: false,
    parser: null,
    maxHeadersCount: null,
    reusedSocket: false,
    host: 'api.kite.trade',
    protocol: 'https:',
    _redirectable: Writable {
    _events: [Object],
    _writableState: [WritableState],
    _maxListeners: undefined,
    _options: [Object],
    _ended: true,
    _ending: true,
    _redirectCount: 0,
    _redirects: [],
    _requestBodyLength: 0,
    _requestBodyBuffers: [],
    _eventsCount: 3,
    _onNativeResponse: [Function (anonymous)],
    _currentRequest: [Circular *1],
    _currentUrl: 'https://api.kite.trade/mf/holdings',
    _timeout: null,
    [Symbol(shapeMode)]: true,
    [Symbol(kCapture)]: false
    },
    [Symbol(shapeMode)]: false,
    [Symbol(kCapture)]: false,
    [Symbol(kBytesWritten)]: 0,
    [Symbol(kNeedDrain)]: false,
    [Symbol(corked)]: 0,
    [Symbol(kChunkedBuffer)]: [],
    [Symbol(kChunkedLength)]: 0,
    [Symbol(kSocket)]: TLSSocket {
    _tlsOptions: [Object],
    _secureEstablished: true,
    _securePending: false,
    _newSessionPending: false,
    _controlReleased: true,
    secureConnecting: false,
    _SNICallback: null,
    servername: 'api.kite.trade',
    alpnProtocol: false,
    authorized: true,
    authorizationError: null,
    encrypted: true,
    _events: [Object: null prototype],
    _eventsCount: 9,
    connecting: false,
    _hadError: false,
    _parent: null,
    _host: 'api.kite.trade',
    _closeAfterHandlingError: false,
    _readableState: [ReadableState],
    _writableState: [WritableState],
    allowHalfOpen: false,
    _maxListeners: undefined,
    _sockname: null,
    _pendingData: null,
    _pendingEncoding: '',
    server: undefined,
    _server: null,
    ssl: [TLSWrap],
    _requestCert: true,
    _rejectUnauthorized: true,
    timeout: 5000,
    parser: null,
    _httpMessage: null,
    autoSelectFamilyAttemptedAddresses: [Array],
    [Symbol(alpncallback)]: null,
    [Symbol(res)]: [TLSWrap],
    [Symbol(verified)]: true,
    [Symbol(pendingSession)]: null,
    [Symbol(async_id_symbol)]: -1,
    [Symbol(kHandle)]: [TLSWrap],
    [Symbol(lastWriteQueueSize)]: 0,
    [Symbol(timeout)]: Timeout {
    _idleTimeout: 5000,
    _idlePrev: [TimersList],
    _idleNext: [TimersList],
    _idleStart: 100321,
    _onTimeout: [Function: bound ],
    _timerArgs: undefined,
    _repeat: null,
    _destroyed: false,
    [Symbol(refed)]: false,
    [Symbol(kHasPrimitive)]: false,
    [Symbol(asyncId)]: 88,
    [Symbol(triggerId)]: 86,
    [Symbol(kAsyncContextFrame)]: undefined
    },
    [Symbol(kBuffer)]: null,
    [Symbol(kBufferCb)]: null,
    [Symbol(kBufferGen)]: null,
    [Symbol(shapeMode)]: true,
    [Symbol(kCapture)]: false,
    [Symbol(kSetNoDelay)]: false,
    [Symbol(kSetKeepAlive)]: true,
    [Symbol(kSetKeepAliveInitialDelay)]: 1,
    [Symbol(kBytesRead)]: 0,
    [Symbol(kBytesWritten)]: 0,
    [Symbol(connect-options)]: [Object]
    },
    [Symbol(kOutHeaders)]: [Object: null prototype] {
    accept: [Array],
    'x-kite-version': [Array],
    'user-agent': [Array],
    authorization: [Array],
    'content-type': [Array],
    host: [Array]
    },
    [Symbol(errored)]: null,
    [Symbol(kHighWaterMark)]: 65536,
    [Symbol(kRejectNonStandardBodyWrites)]: false,
    [Symbol(kUniqueHeaders)]: null
    },
    data: {
    status: 'success',
    data: [
    [Object], [Object],
    [Object], [Object],
    [Object], [Object],
    [Object]
    ]
    }
    }
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