1AI Gateway error: Error [GatewayInternalServerError]: Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.2    at async E (.next/server/chunks/[root-of-the-server]__642d5f6a._.js:44:206) {3  statusCode: 401,4  type: 'internal_server_error',5  [cause]: Error [AI_APICallError]: [object Object]6      at ignore-listed frames {7    cause: undefined,8    url: 'https://ai-gateway.vercel.sh/v1/ai/language-model',9    requestBodyValues: {10      maxOutputTokens: undefined,11      temperature: 0.8,12      topP: undefined,13      topK: undefined,14      presencePenalty: undefined,15      frequencyPenalty: undefined,16      stopSequences: undefined,17      seed: undefined,18      tools: undefined,19      toolChoice: undefined,20      responseFormat: undefined,21      prompt: [Array],22      providerOptions: undefined,23      headers: [Object]24    },25    statusCode: 401,26    responseHeaders: {27      'cache-control': 'public, max-age=0, must-revalidate',28      'content-type': 'application/json',29      date: 'Sun, 14 Dec 2025 21:16:34 GMT',30      server: 'Vercel',31      'strict-transport-security': 'max-age=63072000; includeSubDomains; preload',32      'transfer-encoding': 'chunked',33      vary: 'rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch',34      'x-matched-path': '/v1/ai/language-model',35      'x-vercel-cache': 'MISS',36      'x-vercel-id': 'sfo1:iad1::iad1::8zlhk-1765746994202-fac38fd6c188'37    },38    responseBody: '{"error":{"message":"Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.","type":"AI_APICallError","param":{"error":"Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.","statusCode":401,"name":"AI_APICallError","message":"Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.","url":"https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent","isRetryable":false,"type":"AI_APICallError"}}}',39    isRetryable: false,40    data: { error: [Object] }41  }42}

12025-12-14 21:16:49.958 [info] [AI Gateway] Calling model: xai/grok-4-fast-reasoning Environment: production22025-12-14 21:16:50.036 [error] AI Gateway error: Error [GatewayInternalServerError]: Bad Request3    at async E (.next/server/chunks/[root-of-the-server]__642d5f6a._.js:44:206) {4  statusCode: 400,5  type: 'internal_server_error',6  [cause]: Error [AI_APICallError]: [object Object]7      at ignore-listed frames {8    cause: undefined,9    url: 'https://ai-gateway.vercel.sh/v1/ai/language-model',10    requestBodyValues: {11      maxOutputTokens: undefined,12      temperature: 0.8,13      topP: undefined,14      topK: undefined,15      presencePenalty: undefined,16      frequencyPenalty: undefined,17      stopSequences: undefined,18      seed: undefined,19      tools: undefined,20      toolChoice: undefined,21      responseFormat: undefined,22      prompt: [Array],23      providerOptions: undefined,24      headers: [Object]25    },26    statusCode: 400,27    responseHeaders: {28      'cache-control': 'public, max-age=0, must-revalidate',29      'content-type': 'application/json',30      date: 'Sun, 14 Dec 2025 21:16:50 GMT',31      server: 'Vercel',32      'strict-transport-security': 'max-age=63072000; includeSubDomains; preload',33      'transfer-encoding': 'chunked',34      vary: 'rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch',35      'x-matched-path': '/v1/ai/language-model',36      'x-vercel-cache': 'MISS',37      'x-vercel-id': 'sfo1:iad1::iad1::8vhdd-1765747009969-a0ff312fc70d'38    },39    responseBody: '{"error":{"message":"Bad Request","type":"AI_APICallError","param":{"error":"Bad Request","statusCode":400,"name":"AI_APICallError","message":"Bad Request","url":"https://api.x.ai/v1/chat/completions","isRetryable":false,"type":"AI_APICallError"}}}',40    isRetryable: false,41    data: { error: [Object] }42  }43}```