Request failed with status code 404

Hi I have installed the demo exactly as you have written (with free tier, so I deleted all the namespaces-things like you've answered in another question). Still, when running it, I get, after asking a question: Request failed with status code 404.

In the console, I see an answer. What could be the problem? Thanks

Console: history [] error Error: Request failed with status code 404 at createError (C:\Users\mssve\chatgpt\gpt4-pdf-chatbot-langchain\node_modules\axios\lib\core\createError.js:16:15) at settle (C:\Users\mssve\chatgpt\gpt4-pdf-chatbot-langchain\node_modules\axios\lib\core\settle.js:17:12) at IncomingMessage.handleStreamEnd (C:\Users\mssve\chatgpt\gpt4-pdf-chatbot-langchain\node_modules\axios\lib\adapters\http.js:322:11) at IncomingMessage.emit (node:events:526:35) at endReadableNT (node:internal/streams/readable:1408:12) at process.processTicksAndRejections (node:internal/process/task_queues:82:21) { config: { transitional: { silentJSONParsing: true, forcedJSONParsing: true, clarifyTimeoutError: false }, adapter: [Function: httpAdapter], transformRequest: [ [Function: transformRequest] ], transformResponse: [ [Function: transformResponse] ], timeout: 0, xsrfCookieName: 'XSRF-TOKEN', xsrfHeaderName: 'X-XSRF-TOKEN', maxContentLength: -1, maxBodyLength: -1, validateStatus: [Function: validateStatus], headers: { Accept: 'application/json, text/plain, /', 'Content-Type': 'application/json', 'User-Agent': 'OpenAI/NodeJS/3.3.0', Authorization: 'Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', 'Content-Length': 2514 }, method: 'post', data: {"model":"gpt-4","temperature":0,"top_p":1,"frequency_penalty":0,"presence_penalty":0,"n":1,"stream":false,"messages":[{"role":"user","content":"You are a helpful AI assistant. Use the following pieces of context to answer the question at the end.\nIf you don't know the answer, just say you don't know. DO NOT try to make up an answer.\nIf the question is not related to the context, politely respond that you are tuned to only answer questions that are related to the context.\n\n31.\n12\n.2025\n, \n\nQuestion: When was it written?\nHelpful answer in markdown:"}]}, url: 'https://api.openai.com/v1/chat/completions' }, request: <ref 1> ClientRequest { _events: [Object: null prototype], _eventsCount: 7, _maxListeners: undefined, outputData: [], outputSize: 0, writable: true, destroyed: true, _last: false, chunkedEncoding: false, shouldKeepAlive: true, maxRequestsOnConnectionReached: false, _defaultKeepAlive: true, useChunkedEncodingByDefault: true, sendDate: false, _removedConnection: false, _removedContLen: false, _removedTE: false, strictContentLength: false, _contentLength: 4716, _hasBody: true, _trailer: '', finished: true, _headerSent: true, _closed: true, socket: [TLSSocket], _header: 'POST /v1/chat/completions HTTP/1.1\r\n' + 'Accept: application/json, text/plain, /*\r\n' + 'Content-Type: application/json\r\n' + 'User-Agent: OpenAI/NodeJS/3.3.0\r\n' + 'Authorization: Bearer XXXXXXXXXXXXXXXXXXXXXXXXXXXXX\r\n' + 'Content-Length: 4716\r\n' + 'Host: api.openai.com\r\n' + 'Connection: keep-alive\r\n' + '\r\n', _keepAliveTimeout: 0, _onPendingData: [Function: nop], agent: [Agent], socketPath: undefined, method: 'POST', maxHeaderSize: undefined, insecureHTTPParser: undefined, joinDuplicateHeaders: undefined, path: '/v1/chat/completions', _ended: true, res: [IncomingMessage], aborted: false, timeoutCb: null, upgradeOrConnect: false, parser: null, maxHeadersCount: null, reusedSocket: true, host: 'api.openai.com', protocol: 'https:', _redirectable: [Writable],

  [Symbol(kBytesWritten)]: 0,
  [Symbol(kNeedDrain)]: false,
  [Symbol(corked)]: 0,
  [Symbol(kOutHeaders)]: [Object: null prototype],
  [Symbol(errored)]: null,
  [Symbol(kHighWaterMark)]: 16384,
  [Symbol(kRejectNonStandardBodyWrites)]: false,
  [Symbol(kUniqueHeaders)]: null
},
data: { error: [Object] }

}, isAxiosError: true, toJSON: [Function: toJSON], attemptNumber: 1, retriesLeft: 6 }

mayooear / gpt4-pdf-chatbot-langchain

Request failed with status code 404 #424